could be but shouldn’t be! lol i was also thinking maybe they suffered from the same thing as the Chilean Rose Hair - when i first started keeping tarantulas 1 of the main species you could always find all over the place was Chilean Rose-Hairs (G. rosea) and the 1 i had for almost 15 years only cost like $12 usd when i originally bought her but because Chile cracked down on imports and because it was easier to import than breed them and there wasn’t a lot of breeding lines established the hobby suffered and now you can barely even find them and even if you do find them, they’re v expensive - the last time i saw 1 for example was $120 usd or more
or i was thinking maybe a little bit of the above but with Burms - it seems because of import crack downs, unfair anti-snake laws in the US, and the drive to produce new morphs all original locality info on Burms seems lost - i’ve looked and looked and looked and i have yet to see any pure locality Burm and when i got mine i asked and asked and couldn’t get any info on this - just generic/genetic info