you spend that extra million to keep customers satisfied in a competitive industry. they have users trading hundreds of thousands - if there's downtime and they lose money because they weren't able to sell their positions at the right time, they might even try to sue, who knows
the topics at the top of the homepage, sorting comments by timestamp, the little card when you click on someone's profile picture with other comments on the same channel (which was only on mobile for a while), they improved auto captioning recently and are toying with dubbing, modern codecs… it's the little things that make it better
the very legally binding novel-sized tos? the tos they change as often as they like to benefit only them? nobody is ethical here - they abuse us, we abuse them