Here is how platforms die: first, they are good to their users; then they abuse their users to make things better for their business customers; finally, they abuse those business customers to claw back all the value for themselves. Then, they die.
I call this enshittification, and it is a seemingly inevitable consequence arising from the combination of the ease of changing how a platform allocates value, combined with the nature of a “two sided market,” where a platform sits between buyers and sellers, hold each hostage to the other, raking off an ever-larger share of the value that passes between them.
Once you understand the enshittification pattern, a lot of the platform mysteries solve themselves. Think of the SEO market, or the whole energetic world of online creators who spend endless hours engaged in useless platform Kremlinology, hoping to locate the algorithmic tripwires, which, if crossed, doom the creative works they pour their money, time and energy into: