The last I heard, Amazon actually supports an internet sales tax.
What Amazon wants is a single, rational sales tax regimen for online purchases. They don’t want to have to have some programmer creating special-case code every time the Chigger Armpit, WV city council declares a tax holiday on overalls or whatever. More to the point, they don’t want Chigger Armpit, WV to play “gotcha” games of monkeying with the tax code and then siccing the city attorney on them when they fail to update their system instantly.