A and C: I wasn't aware of the project 4 years ago. But, if I was, I would have had many of the same concerns:
1) existing companies have made huge investments and are only barely making a profit.
2) only one type of aircraft limits customers.
3) long landing distance of the selected type limits available runways.
4) NetJets has had years to develop their algorithms, software and operating procedures.
For better or worse, NetJets is the big dog in the fractional marketplace. To take on NetJets a competitor has to be better in some way. How was JR going to be better?
You apparently have far greater knowledge of JR. You keep defending JR's business plan as being sound. So please, I'm asking you once again, what was JR's secret sauce? What was going to make it succeed? How was it going to be better than NetJets? Why do you think their business plan was sound?
Please, tell us why we are wrong and why JR's business plan was a good one.