As a europe federalist, I would think it is more likely EU would implement these restrictions itself instead of step against Spain.

In theory, we should already be protected against this via the various "Net neutrality" directives, but as the US currently is showing us, laws and regulations are only worth as much as you're willing to enforce them ultimately. But things like these are supposed to be worth at least something:

> Regulation 2015/2120 also states that access providers “shall treat all traffic equally, when providing internet access services, without discrimination, restriction or interference, and irrespective of the sender and receiver, the content accessed or distributed, the applications or services used or provided, or the terminal equipment used,” although they are permitted to apply “reasonable traffic management measures.” In any case, those measures must be “transparent, non-discriminatory and proportionate, and shall not be based on commercial considerations but on objectively different technical quality of service requirements of specific categories of traffic” (Article 3.3) - https://www.cuatrecasas.com/en/global/intellectual-property/...

Remains to be seen if something/someone will put a stop to La Liga's shenanigans, judges have seem unwilling so far, and not a big enough problem for the average person to really care about it (yet?).