Consolidation is inevitable in industries where huge capital investments are necessary to build a viable product. The only way a new manufacturer will appear is if a major government decides to finance it for strategic reasons regardless of economics.
I can think of three occasions where this happened: Eurofighter with the RR based Eurojet engine, Rafale with an engine from Snecma and the A400M with a specifically designed turboprop. None of these manufacturers rose to challenge GE, RR or Pratt and Whitney when it comes to mass produced turbojet or fans.
