[moooo99]

Driven by my ideals and my previous horrendous experience dealing with Microsoft and Google support, I've been a strong advocate for self-hosting in my organization. I do not think companies should put something as valuable as their collaboration and communication in the hands of a company as inconsistent as Google or Microsoft.

However, ideals aside. In many large companies, using Microsoft or Google products can also be a compliance headache (that is, if you're outside the US). A larger corp is more likely to be hit with such issues than a small startup.

Also, self hosting of course requires resources. I'm not talking about compute, in my experience that is very negligible. It of course requires people to keep stuff up to date and learn how to use it to its fullest extent. A larger enterprise can more easily afford this effort than a small startup. Even considering my idealistic stance, it is hard to ignore the low cost of entry as well as the ease of getting started with the big cloud offers.