As a consumer your choice is pay for an overpriced sub-standard product or don't. If you don't pay for it and then watch through other means then Sky/BeIn are no worse off than if you don't pay for it and don't watch it at all. The Ferrari analogy fails because if you steal aa Ferrari then someone else has one less Ferrari. The fact that people here are talking about paying for overseas streaming services shows it's not about not wanting to pay at all, but about wanting to pay a reasonable price for a decent product.
The same thing happened with Napster damaging the CD market, but when paid alternatives to Napster (iTunes, Spotify) became available people showed they would be willing to pay. Ditto torrenting and tv shows/movies (Netflix, lightbox, Neon, Hulu etc).
The only way companies like Sky and BeIn will improve their pricing and product is if they lose money and subscribers. If we all just kept paying for whatever shark they provide then why would they ever try to improve it?
