How Come Most Internet Markters Don't Think Long Term?

I was flipping through my swipe file of ads earlier today
when I stumbled upon an opportunity ad from 1973 about becoming
a typewriter repair man.

The headline read

"If you are stuck in a low-pay dead-end job..."

Then the body copy read "solve all your problems...be a skilled,
typewriter and business machines service expert"

And it sould a course on how to learn to become a typewriter
repair man

Now this ad got me thinking alot about the short term thinking
in internet marketing in general. I bet back them people did
not think that a typerwriter would be extinct, or imagine a world
without a typewriter the same as we believe now a world
without kindle or Facebook.

And here's the point that I want to make, and I've noticed it
from observing and working with many successful internet marketers.

It's that most successful internet marketers focus on
what I like to call "evergreen learning".

Let me explain what "evergreen learning" is,
stuff that will always work, like sales appeals, persuasion,
and human nature etc.

For example) while that ad may look completely irrelevant because
typewriter are ancient technology the ad...Yet I bet would still
work incredibly well if you replaced with "local facebook marketing
consultant" simply because the sales appeal of getting out
of a low-pay dead-end job is still as relevant as it was
then as it is now."

In fact, I know of a very famous marketer who is using this
appeal right now, and racking in the dough.

Here's the thing, I wish someone would have alerted me to this fact when
I started learning how to make money on line because I spent time learning
alot of skills that weren't evergreen and are now useless.

I've noticed the the IM community in general is filled with people
who don't think long term. Just look at how the some of the gurus treated
their customers with product launch merry go round.

thoughts?