If they make the engine work, even with ground generators, they've won.
For a nobody company to design then PRINT (yeah yeah, "additive manufacturing" bleh bleh bleh), and run it will be an astounding accomplishment. After they can just print money.
(that's a HUGE 'if')
The deal with Open AI to make generators was absolutely brilliant!
All of the old CF6's and similar engines have already been spoken for with power generation so they had to get in line for GE90 variants as they became available or take an alternate route.