If you were to tax AI, then AI will simply move to a country in which it is not taxed and you will be left behind without the productivity improvements it brings.
Uber and taxis are not the same product. Taxis stink, the drivers are rude, they aren't clean, the fee isn't set in advance and they often scam you with long routes.
Completely different.
Every time anyone "buys" a movie they are buying a licence. When you buy a DVD or a VHS, that is a licence. If you want to buy the movie not a licence, you would have to pay millions of dollars.