Leica Q is one of the best selling camera for Leica, infact they raised the price 3/4 years ago. Also the Q2 had a 200€ price increase in EU (https://www.macfilos.com/2019/08/01/leica-q2-price-rises-in-...).

Leica has already a medium format camera (S) with interchangeable lenses, its super expansive but a medium format Leica with fixed lens for (example) 9000$ I think would sell really a lot.

Also a Sony medium format for 7/8000€ would sell a lot (more than Leica surely). We’ll see...