[dang]

> How long has your team been working on this project? It seems like it is 2-3 years too late to market.

That reads like a dismissive swipe. Please guard against that here, especially when responding to new work. It may be the default human tendency, but it's destructive of thoughtful conversation. Not all new work is good, but most things that do turn out to be good start small, and all invite a litany of obvious objections while embryonic.

A better way to bring this up would be to provide more detail about your comment's context (example: products X, Y, Z came out 2 years ago) and then expressing your point as a sincere question (example: how is your product different from X, Y, Z and isn't there a risk that the market is already mature).