They could always be like IBM. IBM does very little well. We laugh about them here on Hacker News. But when the job is to provide cover if a project goes bad, actually delivering working projects isn't as important.
Startups could compete by assuring whoever the CEO is talking to that the problem is being addressed. Even if the solution barely works.
Plenty of these systems exist out there and make money. I am personally aware of two that claim to verify something about me that are absurdly incorrect.