Olympus is part of the micro-4/3 consortium also including Panasonic and a number of other manufacturers of both bodies and lenses. The departure of one major player with a long history and reasonable impact and experience may well reduce interest of quality lens manufacturers in catering to this format. Olympus also shared flash foot standards (or non-standards, since there is far too much diversity) with Panasonic. For cameras from a player with less of an established name, the interest in external flashes is likely to be less.
Again, this can affect the availability of third-party products for this format.
The sensor size is not used by a significant number of other systems, so sensor producers might be less interested in supporting this format in the long run as well.