This isn't a tax though. This is mandating that company A sell company B's product, and also pay a set price, which may or may not be a fair price. Should a company be willing to happily go out of business because they are not allowed to sell at a fair market price?

This is actually a step further into absurdity since Facebook is not selling news articles, they are merely linking them. Its the equivalent of the Government telling me I need to pay Nike $5 every time I say the word Nike to someone.