Whether they will continue to love doing this cannot be predicted. Would another "Jack Ma" work his ass off to raise a corporation like Alibaba? This is basically forced philanthrophy. I don't think that money is what matters here.
Pick 10 random directors from multinational companies, one from each country and you will see they come up with a different picture of what personal success is. Do the same with 10 from the same country around the same age and again you will see something different.
Very important at this point is not to look at the picture from your own perspective, for a European or American this might be hard to understand but at the same time is ignoring history, all major developments until the middle of the industrial revolution were done with people getting paid a fixed amount for their work, the whole Age of Discovery was sponsored by rich houses and merchants without the actual leader of the expeditions receiving anything else from the enterprises that were built on their discoveries, same for the all the Renaissance.
Would this move prevent the creation of another giant company? Maybe! Will it prevent poor people to try and succeed in life and at least reach the middle to high-income class, absolutely not!
The West has had this argument with the negative feelings about corporations that become "too big to fail" and are regularly bailed out.
This is going to be an endless dilemma for every government.
Large corporations are efficient, you can't compare the results of a billion factory with the results of a garage shop, so at one point the population gets cheaper products for a period, increasing the purchasing power but at the same time when things go bad a lot of those savings are used to save the company itself. Tricky and as I said neverending story.
We see they are also cracking down on celebrity culture of all kind and gaming is receiving a lot of attention too - all things that can create social connections which might go against the government. It actually shows how shallow and weak they are, but these sort of steps tend to backfire as we have seen incompetent officials trying to deny reality before.
I think you're overestimating the desire for more freedom when it comes to personal actions with the desire to overthrow a government.
Anyone who believes in a few restrictions on what you're allowed to wear and promote in tv shows or online and stricter social rules would lead to any sort of revolt is deeply mistaken. A lot of Chinese are calculated people probably more than us Europeans, they know a sudden change would prove devastating to the economy, and they will most likely choose to play one hour less of games rather than face the instant consequences of a regime change.