I am not sure about the percentage of the market. It’s a standard Android without the bloat so compatibility is there. Price is not that expensive when compared to industry leaders but even if you do consider it expensive that’s the reality of the matter when you want to buy a device which is made with materials whose production didn’t exploit child labor or someone’s misery.

Company has a fairly clear goal and is focused towards that. They want to reduce waste by allowing device to be disassembled and repaired at home, while at the same time providing spare parts years after device production has ended. And along the way make sure materials and labor are all fair trade and fair employment. Take a look at their “our mission” and “our impact” pages. They list every supplier for each of the parts and materials. They even offer recycling your old devices for you.