There is a distinction in the market between professionals and hobbyists, but then most of the MI market is borne on the fact that there are about 2 - 10 million new musician students coming into the scene every year - a portion will become hobbyists, and a very, very small percentage will become 'professionals', by many variant degrees of definition of the word professional - i.e. gets paid, has money to spend on music stuff.
Musicians can be pro or hobbyist, doesn't matter to the instrument maker unless its important the end user feels special. Thus, the higher prices for 'special' instruments.
Music, though, doesn't need to be high quality in order to be experienced. Even low quality instruments can sound amazing in the hands of a musician - hobbyist or otherwise.
A lot of professional musicians aren’t paid much, so it’s not really surprising that hobbyists (who can work at all ranges of pay) sometimes have better gear.
My brother teaches guitar and he frequently sees people who’ve just started playing show up for lessons with ludicrously expensive instruments. And hey, if they enjoy it, more power to them.
It certainly amazes me what some hobbyists can spend without playing a single gig, or even understanding the kit they have, but I guess it's a hobby.
As to professionals if they decide it's worth it to their bottom line I wouldn't call them consumers.