1) Yes, I do think all software has manufacturing defects. I don't wish to penalize the manufacturer, only hold them to the two year mandatory guarantee that they will fix those problems for any consumer product they sell. They should be penalized if they don't fix them, though.

2) True. So what? Why should that get them off the hook? Statistically, we also know that people will always make mistakes, does that mean companies shouldn't be responsible for the blunders of their employees?

The fact that we know our software will have problems we can't fix at launch time just means we need to account for that post-launch cost, plus possibly have insurance for major screw-ups. It doesn't mean we get to claim "caveat emptor" unlike any other industry.

If you want to get the exact same piece of software updated only with security patches, you'll have to select software that is updated this way or pay someone to write it for you.

Yes, that's currently the case, as I admitted in my other post, but it's not an immutable law of nature.