I know some folks who work there. While they we're using Solidus at one point, they've moved away from it a while ago and maintain a custom backend.

Highly worried for Solidus. I just started using it for one of my side projects.

Is this the time for another fork of spree/solidus?

Disclosure: Am at WMTech.

The project won't cease to see improvement in the open source version. Hell, we have a large team dedicated to open source for stuff exactly like this.