The size of the premium headset market is a big question mark, but we know Apple's conservative order for 2024 is 300-400k units and they are planning an inconvenient sales process to slow demand.
Linux is around 1% of desktop market share so perhaps 1% of that 400k would want a premium Linux headset: 4k for Simula to serve. Then we'll find out if headsets grow as a market or they fade out like a fad or transition product category.