True, car manufacturers were sleeping on the wheel, they kept copy&paste their (and other) models, without little innovation.
Hybrid cars were a detail that most ignored, Tesla was a alarm ringing, time for them to improve...yet they look only to top class and quickly it was saturated. Where is demand, lower and middle classes, there were too few alternatives. Now Chinese cars, "same" but cheaper, is a big slap in the face.
Big car brands are too slow to innovate and that creating a market for new brands that can have simple processes.
Is like Nokia phone development, full of process, analysis, tests, market segments... them apple launched the iphone and any valid response required too many development years just to start testing.
but the reverse is that all those plan and test increase quality and quality is good. Toyota even created what is considered now a standard in quality control
new brands skip many of those and them you have tesla headlights glued, things breaking, etc
Chinese for sure also have quality problems, worsen by the fact that many workers (and factories) do cut corners to increase production numbers
Cars build 30 years ago were much simpler and cheaper to build, but doing the same today is not valid due to security, quality and expectation. Tada Motors have very cheap cars... are they safe? do they work after 2 years? not really