Society shares in the value because - insofar as the company is now worth say $X - that's because they have some way to create value that justifies a price of $Y per year for N people. And for those N people to be willing to pay $Y, they presumably have to be getting more than Y value (otherwise they wouldn't bother). So the real consumer value minus $Y is the 'value' created - the consumer surplus. Obviously there are exceptions but I think this is true in general.

And re the impact of the founders/early investors, I agree that they didn't contribute 1000s of times more. But like, if I bet a million dollars on a sports games and I get bet right and make 5 million would you say I ought to pay the players who really did the work? It's not about "adding value" its about property rights. The the second tier of engineers isn't happy they can (and sometimes do) found a competitor.