I believe a business model helps align incentives and increases potential scale. Certainly things can evolve, but the plan is no cut from users and charge businesses a markup to balance employee commute and flights. Hopefully can make it in the businesses self-interest where they see a return on their small investment in terms of employee satisfaction and retention.
I certainly agree a business model can do those things, and sometimes does.
I could see companies such as Patagonia, who have a strong reputation for prioritizing sustainability, potentially being interested in a service like that.
It seems tricky though to align the interests of your users, your customers (businesses, the ones who will actually be paying you) and the environment.
Which is not to doubt your intent, but is why I am skeptical of market-based approaches to solve a problem which is of the type (a problem of the commons) that governments can be good at (if they choose to be) and businesses struggle with.
Look 10 years out in the future though and I think it is easy to imagine 1) many more people care about this 2) the urgency they feel is increased. Can we start with the Patagonias of the world (there are many others) and build some traction? Can we make it something that young employees want and bring transparency to which companies participate? If it can give a slight edge to McKinsey over Bain for example, the cost is trivial.
[Update regarding above: no YC interview, which is understandable based on where things currently stand]