They do not offer downloads like you think. The downloads from basically any service are wrapped in DRM and can only be downloaded and played through their interface. You don't own it. They can revoke your access to it.
There likely will not be anything like this in my or your lifetime. The music industry finally caved, but I don't see the movie industry ever capitulating.
There's a reason we've never seen this mythical system you're speaking of. People, in general, are assholes and will act in their own best interests every time.
The major, glaring issue of an instance not allowing downvotes is that bad/misleading information is free to be posted unchallenged. Be better, Beehaw.
The fact that your old cable was cat5e has no bearing whatsoever on you getting shit speeds before changing cables. The gigabit spec was codified and products were on the market before the cat5e spec was ratified. Gigabit ethernet was literally made for standard cat5. I bet your previous cable was terminated incorrectly, and was only using two of the four pairs, limiting you to 100mbit.
Pretty much any of them.