Stitch From United States of America, joined Jul 2005, 26948 posts, RR: 83 Reply 1, posted (5 years 5 months 3 weeks 1 hour ago) and read 1891 times:
When Boeing developed the 777-X program (what would become the 777-200LR, 777-300ER and 777 Freighter), both GE and PW demanded exclusivity as an engine supplier since they felt the market wasn't going to be strong. Rolls-Royce was willing to share, but they were an exclusive on the competing A340-500 and A340-600 so they likely felt they would do okay even with low sales.
So no matter who won, there was only going to be one engine supplier.
Pratt's PW4090 had problems with NOx (?) emissions which limited max thrust and they blew the fuel consumption mark on the PW4098 on top of it, so they were not really in the running to my knowledge (LightSabre is free to correct or call me on that, though. ) .
Boeing either wanted, or GE offered of their own accord, development monies for the 777-X program in exchange for revenues from sales. RR declined to do the same, so GE was awarded the contract.