To be crystal clear, I am not saying the CSI300 needs to produce 15% CAGR like the S&P500 - the latter is representative of
& underinvestment in critical industries (Boeing, GE to name a few).
That being said, the stock markets should produce returns similar to GDP-returns (if income & return on capital grows at the same rate, then inequality does not get out of hand the way Piketty describes it) in a purely domestic sense, and should generate higher than GDP returns to the extent China continues to capture higher parts of the smile-curve (services, patents/IP, standard setting etc) as it outsources low-end manufacturing to ASEAN.
While you are absolutely correct that the stock market/capital market at large
was not important in China's growth trajectory til today, it absolutely
will be important going forward.
The problem today is that people have a lot of excess cash sitting in a deposit account or in a GIC earning 2% a year, and have nowhere to put it. This is not an efficient capital allocation strategy. The worst part of the current situation is that the bank then turns around and gives that to a LGFV which then invests in a 1% return road to nowhere. Some of these roads are effective, but lots of them are also built just for local officials to skim the grease.
Meanwhile, private companies are resorting to using loans from loan sharks or expensive leasing companies (There is a Taiwanese company called Chailease that makes 10-15% returns on leases they give out) to buy equipment and expand capacity.
This should not be happening in an efficient capital market and is not good for the country!
You should think of the capital market as a matching algorithm that allows willing providers of capital and takers of capital to figure out the right price for capital (interest, or rate of return).
This is precisely why it is important to have a
direct-financing mechanism as opposed to the current
indirect-financing mechanism going forward. Reducing the role of the banking system also allows people to directly raise money and improves diversification of the financial system + reduces leverage for the system at large.
Put in simpler terms, financial repression has helped historically (Stiglitz effect), but it has been causing more harm (Mackinnon effect) than good in the past 7-10 years, and will cause even more harm than good in the future:
To summarize, I will quote the great Liu He: