They're not mutually exclusive? Especially with antitrust, where the whole point is to enable a healthier marketplace such that all shareholders of Google's competitors can also benefit (not to mention users).
It's not that high-QoL societies cannot have shareholders, it's that the stock market shouldn't take precedence over laws and regulations and anti-trust enforcement.
But I think this problem should be solved at the level of countries, not individuals.
Because individuals are always looking for a way to avoid taxes, they can disappear as a class, and there is not that much money if it is fairly redistributed among everyone.
In fairness, EVERY American should be taxed an additional 80-90% in favor of poorer countries. How can a country with a minimum wage of $10-20 an hour not share with other countries when billions of people make less than a dollar an hour?