How many people listed in the credits of your favorite show do you truly think own one, much less multiple Porsches?

I don't think those people are responsible for pricing. The Porsche comment was a flippant way of pointing out the whole parasitic machine that sits atop the actual creatives - the actors, the set designers, the script writers, all those people that you and I do want to support. All those people are not involved in pricing decisions or exclusivity contracts, and they're mostly paid a salary so by the time a movie or series is out, they're already on to the next job. By refusing to subscribe to all the myriad streaming services, you are mainly putting pressure on those executives to make a more appealing product.

I think you're right in that it's very reminiscent of US tipping culture (I'm not in the US), in that the people at the bottom are the ones who do the real work and yet they don't get a fair share of the profits and instead have to take on unfair risk (i.e. the risk of not being tipped).

That said, I need to confess that I'm partly playing devil's advocate, I pay for Netflix and just the other day I paid YouTube to "buy" a digital copy of a movie - for the exact reasons you said, I want to support the creative people behind the shows & movies I enjoy. I just don't think it's accurate to say that there's a moral requirement to pay for entertainment, especially given how unfair the system currently is.