About 3/4 of a mile from my house there is a minimall. There are
two computer repair facilities there now. T'he two storefronts
alternate in going out of business and then pulling a Phoeniz and
reopening under new management.
I believe our throw away society doesn't much care for repairing
things. There are exceptions of course. Yourself and others make
a labor of love out of fixing the almost economically unfixable.
Or out of sheer need.
Old times folks darned the holes in their socks. Now they just toss
'em and buy new. Hell I learned to darn my socks at the 7 year old
level.

Good luck pursuing that first million via computer repair.
More useful and challenging, develope a bit of software that flushes
MS bits and pieces and things like Facebook, Twitter and assorted
moles from computer systems.