A simple example might be how Theranos was going to innovate past stodgy medical companies and provide wonderful new diagnostics to drive down healthcare costs, etc.
Or how certain rideshare companies, once they achieved various local -opoly statuses--in ways not entirely aboveboard--are somehow back to a worse value-proposition than the system they displaced.
Startups give you as many attempts at improving a situation as there are people who can scrape together some capital. Improvements from within is capped at (#Existing Companies x %with functional management) which is a much smaller number of attempts. Improvements by regulation is capped at ... N=1 and whatever the odds are that a good idea dodges regulatory capture, your political opponents, inertia and being too hard to enforce (sub 1 attempt in practice, maybe 2 or 3 pushes in exceptional circumstances).
Of the options, startups are the best. The failures are less consequential.
Maybe some sort of organization should be created to address the parent's problem, but one dedicated to the extraction of value for its members won't make things better for everyone else.