@MarkZuckerberg when it comes to monetization, let's see how the table turns.
It's not with the product in itself that most companies struggle with, it's making money out of it.
And in India, the end users will go to any extent to avoid paying for something, even if it's completely irrational.
Let's say Grapevine is planning to offer something paid (maybe the DMs of advance salary analysis, etc). Out of the 65000 users, maybe 65 or at max 650 people may try it.
So, other source for revenue needs to be identified: maybe ads (could be sponsored or promoted posts as well), or something similar. Which means, it may get bloated with a lot of things.
Be it Byjus or Unacademy or Share that, everything strated with a smaller good intent. As it scales, money problem arises, which may cause problems.
Even Google is ultimately an advertising platform (but it effectively does the same by delivering value)
Amazon is one of the worst business (loss making) as an e-commerce player. It's just that AWS and platform advertising/fees is holding them up.
Microsoft is selling software/hardware. So it's a bit different.