Same as just about anything coming out of silicon valley, lock down a monopoly with a ginormous investment with the hope of recouping it when the costs of running it go down (Moore’s law etc) and the income goes up (because of the monopoly). So they will expect it to make a profit at some point in the future.
I personally would love to see Google/Youtube destroyed. And it’s becoming more and more clear that the intention of this law is to do just that, or at least take some of Youtube’s money and siphon it over to the entertainment industry. I’m not even necessarily against that (although it won’t even do the artists any good at all, it’s just one greedy fucked-up industry trying to get money and power from another equally fucked-up industry).
The problem with the law is that it doesn’t just affect youtube/facebook/etc, it targets the entire internet. Everything on the net will be affected because of a really dumb fight over some even dumber “content”. This is the internet we all live on.
If you really side with makers you wouldn’t want to support this law either. There is clear evidence what works to reduce copyright infringement and “being though on it” never gets very high on the list of solutions. The number one solution is making it easy to pay for access to the content, something the entertainment industry is really slow at understanding.