This is the real answer right here. Any product that doesn't see rapid user growth already has one foot in the graveyard of Killed By Google.
That website is a showcase of amazing ideas that needed time and nurture to come to fruition, but were executed like a poor earning Mafioso having a bad week.
You will have to compare them to their contemporaries, for instance moving from Hotmail and GMX to Gmail was great, not only for the free storage but also for it‘s simple UX.
Ironically the lack of display advertising and advertorials was one of the greatest features, little did we all know.
They do care in the early stages when there’s an opportunity for quick growth (and promotions for those involved)