This is like saying that you know gas power plants are not good for the environment, so you're hoping to get gas generators into more homes to generate capital and demand to fix the problem.

If your company is successful enough for you to invest significant resources into "greener propulsion technology", what is going to happen to all the planes you already sold to get there? Are you going to send an email blast out to all your customers telling them to stop flying now because it's time to pivot to hydrogen planes?