It doesn’t change much since Russia has never been an economic power and will be even less the case this coming years
This coming years will be dominated economically(which is what will be improttant in the 21st century) by China, India, Indonesia, Brazil etc etc I.e all the developing countries still experiencing growth rate and with more room to grow. Their share of world GDP will keep growing to the detriment of old/past powers like UK, France, Germany, Russia, Japan, S.Korea etc
The US is still the outlier here since despite being a fully developed industrialized country for almost a century now they still have a fairly dynamic diverse economic base , most skilled workforce , advanced technology, largest R&D , vast natural resources, and they are still growing healthily for a large developed country with a vast economy and military (still the most powerful on earth by a margin). So the US will be only one among western powers to remain more relevant this coming years/decades. One thing I have learn from the US is to never underestimate them. They are a still a very resilient country/power . But other western powers(and their East Asian allies) and Russia are in an inevitable decline in the long term .
Russia will never be an economic power per se because its oligarchy—including its political one—is visibly backward. The Russians know how to take advantage of their immense natural resources, but this isn't enough to transform them into an economic powerhouse like China and the US. And that's not to mention the demographic issues Russia faces, among other problems inherent to Russian society.
However, it's worth highlighting something here for you: although Russia isn't an economic powerhouse, they will be fundamental to any future economic integration because of their natural advantages: their natural resources. Asia will be the focus of growth in the coming decades, and Russia can take advantage of this moment of Asian economic growth and the shift in the axis of power from the West to Asia and reinvent itself in a post-Western order. Take the case of India and China; Russia will simply be able to have as its export/import consumer market the two largest economic powers in the world in the future, with a combined population of over 3 billion people.
This is the case with Russia. You mentioned the US. Many people call the United States an inevitable country because of its geographical advantages. However, this is pure nonsense. When the modern economy derives from technological advances and industrial scale, this was true for the United States in the 19th century.
I'll tell you how the United States became an economic superpower: Post-World War II.
When World War II ended, Europe was destroyed, and Asia was literally under the control of the United States. Think of countries that were empires like Japan and Britain, countries with advanced industries like Germany, and countries that still had significant economic power like France. All of them emerged from World War II destroyed, while America emerged from that war virtually intact, with its continental territory untouched.
All of its industrial power remained relevant until the 1960s, when signs of economic and social decline began to emerge. At the same time, during the Cold War (1949-1989), the countries that emerged from World War II, which could have posed threats to the American Empire, became economic powerhouses, but not to the point of challenging American hegemony. This was because Washington maintained control over its vassals. Japan is the greatest example of this control, as it was the country that was ascending economically and technologically to the point of challenging American economic sovereignty worldwide. However, Reagan clipped Japan's wings, and since then, Japan has been surpassed even by Germany.
The remaining Third World countries that could have challenged American economic power ended up becoming communist or underdeveloped or inefficient economies. However, with the fall of the USSR in 1991, the true shift in the global economic order began. The destroyed World War II countries were already significant economies, while the Third World countries were rising economically, while American technological hegemony was eroded to the point that today China is at the forefront of global technological advancement.
Currently, with some emerging countries climbing the global economic hierarchy, American hegemonic power (including military power) is being eroded, and they no longer have as much absolute power as they did until recently. America will remain relevant because it is still an unequal struggle, decades old, since the end of World War II, but the world will be more different in the future than it was decades ago, and it is the Americans who will ultimately suffer the greatest geopolitical impact since World War II.
Unless they reinvent themselves as you believe they can, Americans will become increasingly decadent.