If you already have a degree, just in the wrong field, you don't need to get another degree. Just get the training by whatever means.
Heck, my degree is in mechanical engineering, yet I had jobs writing software.
There really is a "cult of the degree" and I really don't get it. Is the field getting saturated and employers are finding it necessary to erect barriers? Does this, an average, make good fiscal sense? I would think successful, relevant experience is something (that when verified) would reduce risk for businesses.
Unfortunately, getting that first interview can highly depend on those papers.
Big, mature bureaucracies want formal signals. Small/young businesses and startups care about competence. Google is very large, but I suspect still manages to act "young" in many respects.
Soon they will.
If the internet people come at cheaper prices.
There isn't much difference between people who watch a lecture on the internet vs those who watch it live.
But filtering out the good ones from the "internet people" is more expensive than seeking through college graduates.
Expecting your education to make something of you, instead of making something of your education (track record) is another.
Managing to get a certificate does not guarantee one can apply those YouTube videos.