Governments have more money than god and are horrible at efficiency.

The efficiency of a government is determined by those who direct it, it's not inherent to the structure.

The Manhatten Project, the New Deal, and the Space Race were remarkably efficient and productive, back in the time that we believed that governments can and should do things, and politicians worked together in good faith.

Then corporate lobbyists bought our politicians and convinced us that governments are evil and inept, and that they shouldn't have to pay taxes because the government will just waste it. So we deregulated everything, and now billionares just waste their record profits on low orbit joyrides instead, while average Americans die preventable deaths because they can't afford healthcare (which the governments of every other developed nation manage to provide their citizens for free).

The money is diluted (excluding dictatorships), and the end goal to optimise for is more power, not more money.

Amazon doesn't have to pay for roads or a military

amazon does have a lot of revenue, but it doesn't have the extreme margins that companies like google and facebook have. they can't just throw money at problems the same way. amazon has similar margins to walmart, and only just exceeded the latter's revenue in 2020. would anyone argue walmart is the more innovative company?

Remember that Amazon didn't start with more money than God though. They got here by consistently making hard, long term bets.