Tbh, from their perspective why would they offer that when people are paying (literally) that much for Retail Pro licenses as-is (even I've bought a Retail license before, hence my disdain at some of the backwards decisions in W11 as a paying Windows customer).I'd gladly pay $199 for a Windows 11 Lite/Premium straight from MS that shipped with 90% less of the monetization stuff present on stock install (similar to LTSC)
If someone wanted a proper LTSC license my understanding is it's possible by buying a minimum threshold of cheap enterprise software + single Windows LTSC license in one volume purchase but even then the ordering is said to not particularly straightforward. (These may be outdated steps fwiw, I'm not familiar with such licenses.)