Kids like my nephew and his band have:

Boundless energy;

they can carry gear all night and stay up until 3 a.m. and go to work for 8.
they have many new options past someone's garage, (like old warehouses in the near downtown area where someguy sleeps there and is a part time musician)
and
there's always a new guy wants in the band.

They don't make squat, it's still a hobby, and they play once or twice a week, and get themselves a once a month gig where the bar owner buys them drinks and runs a battle of the bands.

As to marketing, let's face it. The genius behind the band is a medical doctor and no dummy. His brother is an award winning jazz guitarist. They have contacts, mostly in the jazz world. Maybe though, they can run a few minutes up the road and get Elvis Costello to sit in. We'll have to leave out his wife Diana Krall though, the OP dude is tired of jazz.

Now I was recently in Europe for a month and I saw classical, jazz, and tyrolian bands. Mostly the latter, lederhosen and all. (I have a cool one with the filed antler horn made into a sort of shiv. Weird. But I ended up staying 2 days longer in Austria, and NEVER took the Sound of Music tour.

At the end of the day, wailing against the way it is does not get one anywhere.

In my not so humble opinion, as a sort of a backdrop to this I am helping deliver a course at the local university in Music Education. The course covers many genres, but goes away from a first year student's comfort zone. I get to do 1750 to 1950 on external influences on musicians, and the evolution of a musician from fool (ie. sitting with them in the kitchen and performing before or after him), to being considered an equal with the counts, dukes, princes etc. who where there employers, then jump to

Electronic computer based music, and the demonstration of that.

It's been a ride I won't do again, but I'm too tired to carry that on.

John Conley
Musica est vita