Lawmakers won't care until it is them and their kids that are being tracked by "hackers". Flock API's are poorly protected and the individual cameras are hackable as shown by Benn Jordan in multiple YouTube videos.
Their are documented cases of Flock cameras that can see into private residences. What if one of those cameras recorded an underage person? Would Flock be responsible for collecting and distributing CSAM?
These centralized services do and did solve problems. I'm old enough to remember renting a quarter rack, racking my own server and other infrastructure, and managing all that. That option hasn't gone away, but there are layers of abstraction at work that many people probably haven't and don't want to be exposed to.