You see a new technology with flaws and just assume that those flaws will always be there and the technology will never progress.

Say you start with a prototype for a perpetual-motion machine. Then those flaws will always be there and the technology will never progress.

It is intrinsic in some technologies tthat they're a dead end. That doesn't mean all of them are, but some are just worthless crap and throwing more good money after bad isn't going to change that.