> I just said software patents encourage innovations but they discourage adoption - and you never convincingly disproved this point.
Short memory - that's what we all have. Software was being developed just fine without patents. Plenty of innovation. I mention that before. But, you claim this does not disprove your theory of software patents. Back in the 90's just about everyone in the thriving proprietary software industry was _against_ software patents. Now they are for them, because they want to protect status quo. This is monopolies 101.
> Yes, but this system only works if rules are not changing.
Rules (laws) are constantly changing. Otherwise, parliaments would be out of business. The deal is that there are always transition periods. You tell people that what they have will be respected, but going forward after some point in the future, rules will be different. So, they adjust the expectations and continue. This is standard legislative practice.