Why is there 440source but no "360source"?

I've been thinking about this for a while it's something that bugs me and I don't quite understand. Is the demand for big blocks that much higher than small blocks? I know it's been discussed before but how come we hear about a new BB aluminum head that's cheaper and better made coming out every now and then but still nothing for SB's? Got them expensive E-brocks with QC issues that have been beaten to death, and I've heard ProComps and AirWolfs mentioned still sounds like they cost a few thousand regardless.

Has anyone (mainly asking the vendors and business-savvy members) done the market research on starting a company similar to 440source that sells ONLY Mopar SB parts? Granted they aren't as popular in hardcore drag racing and such as the BBs but there have been sooo many more made and so many more budget-minded performance people who have cars and trucks with small blocks. I must be missing something critical but I feel like if someone came out with a competitively priced street/strip oriented "stealth" style AL head for the small blocks Mopar folk would be clamoring to get them.