Let's set aside for a moment that I think this suggestion is completely absurd. Are these sites using some prepackaged streaming solution? Do you not realize that I can stream video from any machine using software I control? To an approximation the only thing required to scale streaming up to lots of customers is raw bandwidth. If you don't accommodate seeking you can potentially serve thousands of simultaneous streams with a single cheap VPS (in practice this won't work because a cheap VPS won't have a 100 Gbit pipe).
> So why shouldn't you need to pass some set of verification
Since when have you needed a license or verification to publish? You're acting as though a global impressum requirement is the natural state of affairs. Your demand is an affront to free society.
> we let ISPs get away with ignoring abuse@ emails
That seems like an entirely separate matter, if it's even true at all.
> No
Ah yes, a rousing argument. Obviously you must be correct.
You've failed to make a convincing case as to why deciding what is and isn't permissible isn't the job of the judiciary. If Spain wants to change that then they need to pass laws to that effect but in practice those won't have global reach. Thus they might (for example) engage in international lobbying efforts to incorporate a DMCA equivalent for illegal streaming into the global copyright regime.
Failing the above it is Spain that is in the wrong here and I'm happy to see that CF isn't going along with their overbearing and entirely unreasonable nonsense.