I paid $7,000 per year for two years and got multiple transcontinental flights (including catering), free heli-shuttles, and free empty legs. I don't think it's lunacy to expect it---it's lunacy of Jetsmarter to offer it at an unsustainable price.
Well... this is exactly what zillions of startups do, on scales both smaller and larger. Do you really think all the discounts that Uber gave when they were starting up ( and often still gives ) are sustainable? They're not... the company is losing money hand over fist, but the theory is they'll start paring those back as time goes on and start making money, and people will be so used to the new model they'll keep using Uber. I don't know if it will happen or not, but there's a lot of people who are a lot smarter than me that are betting it will.
I can't blame JS for offering something at an 'unsustainable' price and then paring it back. That's pretty much the first chapter in Startup Marketing 101.