Build a product -> make it free or very affordable -> create dependency -> collect user data to improve product resulting in more dependency -> create a near market monopoly if possible -> make it paid only or make the free version a lot worse so users have to pay -> cross fingers that no alternative emerges or just buy it and shut it down if you can.
Always the same pattern.

When you zoom out and look at the bigger picture, this is just the latest instance of ever expanding credit being converted into assets, just like housing, and reflected in everything down to groceries.
The structural problem lies in the very fact that we have, since 1971 and the end of the Bretton Woods system, fiat currencies backed by nothing tangible or physical, allowing for limitless expansion and by extension inevitable devaluation.
That money has to go somewhere to avoid being eaten by the very inflation it created, holding onto a resource that can be infinitely replicated, like currency in our present system, is a guaranteed loss.
The goal of fiat fueled VC bubbles is never to generate immediate, honest profits from selling a product to consumers, the goal is asset inflation and capital preservation.
The system is not broken, it is in fact working exactly as intended.