Depends on perspective. All those companies that you talked about are private companies in capitalist states whose only rule is the jungle rule, one kills everyone else.
China is not capitalist state, a private company's success means NOTHING to the general public if not serving the good for the whole population. The only judgement of any company's value is if it promote the industrial and technical compability of the WHOLE country. One super powerful company in a monopoly position is certainly against that purpose.
Example, there were two railway companies (south and north) in China. They competed one another in lowering prices abroad. They are essentially bleeding China's treasure by firecefully beating each other. Their own good is bad for the country. Therefor we saw them being merged into one recently. They are all state companies, so it is easier to handle. I am not advocating same dealing of Huawei, far from it. But certain limit must be set so it is not Chinese company killing another Chinese company.
Huawei is NOT a national hero, it is a commercial company whose primary aim is its own profit, which is not always in line with the national interest.
Tencent is also a Chinese company, and has engaged in far more well-known anti-competitive and monopolistic practices in its past. As said by the greatest Chinese leader in past century, "It doesn't matter whether a cat is black or white, as long as it catches mice." Huawei's contributions to development and advancement of China's technological and industrial capabilities as well as its role in paving the way for Chinese companies and brands into the high-end, high-tech consumer markets cannot be understated.
On the other hand, I fully agree that the state should keep an eye on large companies to prevent inefficient monopolies from forming and dominating large parts of the market, and I believe the Chinese market-socialist / state-capitalist economic system is much better suited to tackling this problem than a liberal financial-capitalist economic system. In a financial-capitalist system, financial elites have managed to tie in the wealth and pensions of much of the population into the share prices of large publicly trade corporations in such a way where capital allocation becomes more driven for the benefit of the financial elite rather than national or public interest.
Chinese system offers best of both worlds, where market competition breeds competitive and innovative companies while the state has the mechanisms to channel capital where needed for the national / public interest. The state can divert capital to successful companies that have validated themselves in the market such as Huawei when it is needed. On the other hand, the state can provide capital to potential competitors in certain sectors where greater competition is desired in order to prevent the formation of monopolies. Market regulation is a fine and delicate balancing act. On the one hand, you want competitive and innovative firms to be able to achieve the economies of scale to allow them to become efficient enough and fund the R&D that will propel them to be able to become global leaders. Yet at the same time, you don't want companies to grow to the point where they have monopolistic influence over a certain segment of the market, where they become rent seekers and stifle innovation and competition.