I think it comes down to having founders who define changing the world as "better for all" rather than simply "obscene amounts of money for us". Even if they sell up later the hollowing of a formerly ethical brand under a multi-national often means it stops performing.

We seem to be in a gilded age of no consequences currently. Money, and absurd amounts of it, seems to be the be all and end all of everything. There have been times where philanthropic founders and industrialists have thrived. There can easily be another. Hopefully we can get it without need of pitchforks, but that seems like an evens bet right now.