If tax was the burden from a French "Amazon" from founding, they also could easily have a shell in Ireland or Luxembourg. I don't see this at all as France trying to tax Amazon, et all from doing business in France. I see it as a pure money grab. Truly, this isn't really a tax, but more of a tariff. It should be called as such. Maybe it's equally applied against domestic companies and wouldn't be strictly a tariff, but it's intent is most certainly as a tariff.

Edit: I don't work for Amazon, though my brother does. I also don't work at a company that has much of a stake in this fight.