Oh, also, don't forget that we have a few "minor" companies represented in France, such as Mozilla, Microsoft R&D, Apple R&D, Google R&D, IBM R&D, Intel R&D, etc. all of them involved in some extent in the French startup ecosystem.

For instance, Mozilla (where I work) hosts events with startups, has its own accelerator for startups, and provides some mentorship. Of course, that's for startups that aim for open source, open web, open government, privacy, or any other form of greater good.