I agree with this entirely, in theory. BUT in reality...what seems to be happening (based on what I read on this forum) is lil' Johnny learns to play the bass, grows up, gets a good-paying job (or great gigs), and becomes active in a great online forum where he loves to talk about gear. But despite now being an adult with some disposable income to spend, instead of going upmarket with, say, an MIA P-Bass for $1,200, he instead prefers the $300 Squire Vintage Modified, because hey, it's just as good as the MIA but a quarter of the price! I mean, who wants or needs an "extra 10% of quality for a 70% price increase" per ninjaaron's previous post?
You can see how this could be a very bad thing for Fender.
The computer electronics business has played out in a similar manner over time. Companies like Dell and HP thought it a good idea to build market share/brand share by constantly cutting the price of their consumer-level products to the bone. Result: those new price points became the new expectation. No one wanted to spend $2,000 on an HP computer when they could get an HP computer for $600.
You'll note the most financially successful computer electronics business in the world (Apple) avoided this dead-end trap entirely by never jumping into the shallow end of the pool. You want an Apple? Great. You will pay a premium for it. You want a cheap computer/phone? Go talk to Dell or Samsung.
$300 Squires that are "comparable" to $1,200 Fenders only kill Fender's brand and business. Squier cannibalizes Fender sales. And that's not good when Squier are much-lower-profit products.