Amazon does invest most of their profits back into the business, that is why they were operating with basically no profit. They still paid plenty of taxes though, like payroll taxes, that aren't based on profit.
Then apply income tax or something on loans against stock over a certain amount, but I'm guessing that isn't enough for you? I'm guessing like everyone else here the only solution is to tax them so much they aren't a billionaire anymore, forcefully taking their company away from them in the process.
I know, it's awful that people want rich people and rich corporations to pay their fair share of the tax burden. If they can't pay their fair share and keep ungodly amounts of wealth, while people are homeless and children are starving, while shit, I guess they just shouldn't have to pay taxes then. What if they had to sell some stock...ohh, the humanity! Will the horrors never cease! You sound like an absolute clown.
What is so bad about investing money back into yourself, it's exactly what non profits are built around doing.
What is their fair share? Your rant to take away all their profits even if they make none? Stop job growth in the company by not allowing them to invest in new products or ideas?
Why should owners be forced to sell their business just because it's successful? Why should we punish success? Stock isn't just some made up currency, it's literally proof of ownership in a company, it's voting power, it's not someone we should be forcing owners to give up.