Some of us who know that the world and business models of 30 years ago has changed, but refuses to declare a failure until we see it.

They announced the business model for Warbirds 2020, it will be free to play (basic plane set, spit 1, 109 e, etc) and subscription for 1 day, 1 week, 1 month.

This is best deal for me, unlike war blunders there is no cash shop because of subscription and players still can play for free.