A lot of businesses look similar when comparing the basic idea. When you compare on execution things can get dramatically different.
[1] https://startupclass.samaltman.com/courses/lec01/
> It's become popular in recent years to say that the idea doesn't matter. ... But the pendulum has swung way out of whack. A bad idea is still bad and the pivot-happy world we're in today feels suboptimal. Great execution towards a terrible idea will get you nowhere. There are exceptions, of course, but most great companies start with a great idea, not a pivot.
[2] e.g. http://www.paulgraham.com/avg.html. Controversial, but I'm a believer.