They made money, sure. That's revenue. If I sell a widget that costs 1 dollar for 2 dollars, I made 2 dollars in revenue and 1 dollar in gross profit. But if I spend that 1 dollar towards the construction of a new factory, I made 0 dollars in net profit. So why should I get taxed on money that I didn't get to keep or profit from?
Amazon is not a profitable company, if you want to see how, just look at their yearly earnings reports, they're a public company so anyone can look.
The truth is that they declare artificial loss in European countries, where they get most of their revenues but would have to pay high taxes, and declare their huge profits in places like Delaware where they have tax exemptions.
He's not being "rewarded" as if someone is handing him sacks of cash. He's a shareholder, much as you and I might be. Most people through their 401k, if they own any amount of the total stock market index funds, are also sharedholders of Amazon. If Amazon grows and generates more revenue, the stock price grows, and thus we are "rewarded" for its growth, because we literally own part of the company. Bezos just owns a much larger share because, well, he started the company.