Leasing is a tricky endeavor. The badly-flawed revenue model generates so much cash that established airlines will never need to lease. As you can see in your own case, they can always afford to buy all the aircraft they need. So, your only real market is the new entries. These guys often find it cost-efficient to lease in aircraft as they get up to speed. Again, this is because the revenue engine will generate far more income than the cost of a reasonable lease. Thus, you could make some profit if you can anticipate exactly the type of aircraft the startups need. But, for me, leasing out aircraft is far more trouble than it's worth and I've found that it rarely justifies the effort.
