"Netflix for planes" is just confusing. I literally read the title and thought this was about movie rental on aircraft... Then found the article incredibly confusing....
Honestly the title would be clearer as:
"OneGo to offer almost unlimited air travel within the US for a monthly fee."
As to the service: Seems incredibly niche. Inter-US flights are pretty inexpensive, and this doesn't seem like it breaks even unless you fly an unusual number of times in a given period (roughly 8 per month by my count, give or take).