You mean Bezos? Well of course, he's CEO of Amazon and I don't think the board or shareholders would tolerate him saying "this is such a good idea that would make us tonnes of money, but we'd better give the opportunity to someone else"

I'm actually kind of amazed that Amazon has managed to plow so much money into their business without shareholders throwing a fit. The usual modus operandi of activist shareholders now is to get the company to pay out as much money as possible to shareholders while investing as little as possible into R&D. They've even managed to squeeze Apple into stock buy backs! Amazon seems to have avoided this and is thus able to invest lots of money into their business units, and look at how it's paid off for them (amazingly well).

Regarding Amazon eating the world, I'm not that concerned about it honestly. If Amazon starts acting like a monopoly, regulators will step in and force them to divest from certain business segments. If Amazon gets lazy and starts charging people higher prices or offering a more limited selection, then people will vote with their wallets and order from somewhere else.

So on the whole I still see Amazon as a net positive. They're pushing the rest of industry to innovate in ways we haven't seen before (logistics, online shopping, cloud services, assistants) and this is a win for consumers.

Sure, there's been some high profile bankruptcies/fire sales from competitors who haven't been able to adapt (e.g. Sears in 6 months), but I have to ask: do you really want to prop up companies that cannot compete in the market? That doesn't make sense from a consumer or economic perspective.