That doesn't answer the question at all. You were asked "how do I know you won't leave in a short time frame?" and you answered the completely different question "what benefit (to you) have you got from having lots of jobs?". If anything, it suggests you view leaving companies after a short time as a positive thing you'd want to do again.

By the way, I don't agree that if a company would like employees that tend to stick around then that indicates some sort if weird cult-like behaviour. It's more like a recognition that productivity naturally is lower in the months after someone joins than after they've been there for a year or two. Choosing people that are able to stick at a job for a few years is just a sensible business decision. Admittedly it does have social benefits too i.e. there's a better work environment for everyone if you get to know other people over a period of time (in spite of some HN commenters' views that we're all robots that shouldn't care about interactions with coworkers). But, in my view, even that is reasonable justification.