OPs specific complaints about Netflix and Spotify are mostly a result of their success. Back in 2012 Netflix had a lot of movies because Hollywood didn't value streaming and were willing to sell the streaming right for most of their content for tiny amounts of money. And there were no other streamer.
Spotify is in a similar boat. The music companies didn't value streaming and were willing to sell their entire catalog to the one player in the ecosystem (or in the case of music, to everyone for the same low price)
But also, personalization actually drives a ton of revenue. When I worked at Netflix, when the recommendation system went down and we defaulted to curated lists, streaming would drop 20%. And that was in 2013. I can only imagine what the drop is today when that system goes down.
Personalization drives a ton of revenue, and TikTok is the best at it, so it's no surprise that OP sees everything "going to TikTok"
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