Your biggest failure is the thing you dreamed of contributing but didn't find the guts to do.
If you wait until you are ready, it is almost certainly too late.
Products that are remarkable get talked about.
If you can't make money from attention, you should do something else for a living.
Go for the edges. Challenge yourself and your team to describe what those edges are, and then test which edge is most likely to deliver the marketing results you seek.
We don't become mediocre all at once, and we rarely do it on purpose.