> Shares are proxies for ownership/control.
Connection between shares and ownership is tenuous at best and rarely exercised.
> What you are proposing is literally what China does to ensure CCP control of all businesses.
10% is not control. China is not democratic. Given that, Chinese companies seem to be doing quite well under those conditions. Better than Western ones.
> Do you really want whoever is in power at the moment to have (even more direct) control over every business in the country?
Do you really want all economic power to be controlled in undemocratic manner rather than democratic?
Because that is literally what we have now and society and governments are getting impoverished and companies are getting outcompeted too.