[Avodah] mareh mekomo -- talmud torah rules!

[Sholom Simon via Avodah]

I remember reading a generalized essay on why learning the gemara was 
good for you, and the writer was exploring the idea (making the 
point) that the gemara explains to us values that we wouldn't have 
otherwise thought of on our own.

He gave (if I'm remembering correctly) the following example:

1.  A town has a single shochet.  A younger shochet wants to move in 
to town with the latest "shochet" technology -- whatever that 
is.  The point is that he thinks he can provide his services more 
efficiently and at less cost to the community.  In this case, the 
gemara tells us (al pi this rav-writer) that the beis din of the town 
can decide that the town can't support the competition, and weigh the 
fact that the older shochet might be put out of business, etc.  I.e., 
the beis din has a lot of room to enforce a non-competitive monopoly here.

2.  Same scenario,but we're talking about a school, or a 
teacher/educator.  A younger rav wants to move in, because he thinks 
he can do it better.  In this case we davka want to encourage 
competition, even though it might put the present teacher/school out 
of business, because in this case -- teaching our children torah -- 
competition that might provide a better product is more important 
than the parnassa of who might be put out of business.

The point that this writer was making, again, is that this 
distinction is not something we might have thought on our own.

I gave the above example to a few educators last weekend, and they 
all jumped out of their chairs asking me: where in the gemara is this?!?!

I have no idea!  Can anyone here provide a mareh mekomo to this 
idea?  (Am I even telling it over correctly?  Has anyone heard this?)

Thanks!

-- Sholom