From my perspective, the size of the companies has little to do with the relative risk of outcomes that are not the best for the common good. I've seen folks at small companies try to control or unduly influence open-source software, and I've seen folks that work at large companies do it too.

At the end of the day, I think it comes down to the actions of people directly involved in a community, and the culture that they collectively cultivate. I'm optimistic that being intentional in this makes for a very resilient project and community.