The federal government that Amazon spends millions lobbying.

I'm well aware that what they're doing is legal; I'm saying it shouldn't be.

Taxing unrealized capital gains isn't happening because Amazon is lobbying the federal government, it's a fundamental premise of the US tax code and starting to tax them is arguably unconstitutional (I'm not arguing it is or isn't, but I've seen arguments that it is unconstitutional from reasonable sources).

I would find it hard to believe it's unconstitutional given that the 16th amendment defers the definition of taxable income to US code.

And Amazon's lobbying isn't the only reason, but it is a reason.

Your representatives don't have to accept Amazon's bribes, you know. They choose to do so because they're corrupt and convinced you to be mad at a different party entirely while they pocket the cash for future campaigns where they convince other people like you that they will serve your interests.

Where did I say I don't blame them too?

I shouldn't have to say this explicitly but yes, accepting bribes and giving bribes are both bad.