Would be interesting to quantify the difference in resource requirements between an OS which addresses a few known fixed/limited display sizes & resolutions vs.

Would be interesting to quantify the difference in resource requirements between an OS which addresses a few known fixed/limited display sizes & resolutions vs. an OS which must support a near-unlimited range of sizes & resolutions. Might better explain why the latter, in the practical marketplace, is usually in a response/catch-up position to the former.