If you are talking about the OS, then no, I don't think it is more suitable for low cost phones. The implication would be it is less suitable for flagships, and that isn't true. It has all the features that make a flagship what it is, great camera, additional sensors, performance (which surprisingly doesn't vary that much). It's the same OS regardless of what you put it on. Is putting it on low end phones more lucrative for OEMs? That's probably true. You get all the benefits of a high end OS, with the low cost. Unfortunately you give up stuff too, RAM, Memory, camera, screen resolution, wireless charging... That's all hardware though, it's the same OS.