The problem with wet leasing is that it doesn't scale. Try operating an airline with 300 planes under wet-lease and still make a profit.
Pivoting in the airline business is difficult, changing from planes to boats is cumbersome; scaling is the only option.
(And my planes scaled from toy size to 1:1)
Major commercial air travel is a commodity business. Where opportunity lies is perhaps in offering air travel solutions that bypass the hassle of airports. Shuttles between SF, LA or Houston and Dallas for example. These are heavily trafficked routes with mostly business travelers who would love to avoid long security lines and drive right up to a plane at a small airport.