Typically Linux support in products like this is organic: It happens when the engineers themselves use Linux and push upwards to support it.
Anyway, with the amount of testing and verification we do on our product, desktop Linux is impractical. We try to verify on as many possible user configurations as possible. (Multiple Windows versions, 32-bit and 64-bit, Multiple Mac versions, remote desktop, ect). Linux is so heterogeneous that we could only really support it if it was a large customer where we targeted their typical configurations.