True.
But my point is that you could call both "a success" the moment that one singular person uses it as alternative. For that person it is a success!
With Peertube you need some network-effect, because one single person uploading and then watching those videos, can't be called "a success". But if a tiny niche, say a small group of specialist beekeepers, uses it to share instructional videos and no-one else in the entire world uses it, it can still be called "a success". Because for them it offers a solution.
That said, commercially, it is hard to argue with adoption as a metric. Problem is, focusing on that metric results in the same bs as in the real world: consumer ( crap tier ) and business ( good tier that tends to have good options if you are willing to spend money ).
> they (the local pub) would have a much harder time selling something unique
> Scale ...becomes the default choice
Scale and monopoly removes choice and uniqueness.
There are people that love Starbucks, there are also people that love their local coffee shop.
Quantity has a quality of its own, and it's not always a good thing.
Why do so many people insist on Growth and Largest, as metrics for 'success'?
My local pub is a success. They are not worlds' largest pub. My Mom and Granny don't go there. They don't have parties with millions of people crammed in the place. Etc.
Why can't Linux be called 'a success', the very moment that it helps one person? Why don't we call Mastodon or Peertube a success the very moment a tiny group of people uses and likes it? Why do we insist that Peertube is only successful when my mom and my Granny use it? Why do we insist on huge market shares to call open source successful?