Why isn't justice equal everywhere, and all mankind strives to equalise for the pain and suffering?
Why does god let the Lisbon earthquake of 1755 happen?
Look: what a company uses, is what the initial tech staff bring to the table, or what future tech staff convert to, or what a C-suite enacts as a KPI before walking. It has almost nothing to do with "x is a better tool" and a hell of a lot more to do with "y cost me my job at fooco, I'm never recommending it again" or with "we get an SLA with z" or even "we can hire more juniors with competency if we continue to code in this dead language java because thats what the local college teaches in"