I don't think IFI is done with FIRST. Many of the IFI guys actually get enjoyment from being involved, I have witnessed this firsthand. JVN has stated his own enthusiasm. We have Victors and Spikes.
IFI's main business is not robotics, it is a business called "
Rack Solutions", so surely they will focus upon their core business (as any good business does from time to time) and likely keep thinking of new ways to cooperate with FIRST.
I have nothing to back any of this up, it is pure speculation on my part, but business is business and fun is fun - and I see IFI people having fun and that makes me thing they're not just walking away from it all.