I think the situation is a bit more complex: the proliferation of F/OSS itself has driven the market into the situation where integrating and running other peop

I think the situation is a bit more complex: the proliferation of F/OSS itself has driven the market into the situation where integrating and running other people's commodity software is one of the only commercially viable options left. Another factor is that commodity hardware is so powerful, and has been for over ten years, that it just had to be put back into the hands of datacenters/clouds.