[peterjancelis]

Not true. Being the last mover is more important than being the first.

Also, having an established competitor is great as it allows you to research what customers say about their experience. An MVP with a slightly different angle can become obvious from that.

[amirmc]

It depends a lot on the type of product and the particular market. You shouldn't underestimate the inertia of something that's 'good enough'. If you're not one of the early ones then something about your product will likely need to be significantly better in some aspect.