As I say in another comment, I'd be happy to put a punitive taxation level on this entire industry. But if we're going to talk about "paying users for their data", then from the very beginning the framing is being written in terms of what the companies can afford based on what they're making, and the whole conversation is going to be anchored in terms of what the companies make. The discussion won't be about internalizing externalities, it'll be about the users profit-sharing with the companies.

If you want to internal externalities, go for the tax. Probably an easier sell to the politicians.