Sure, and yes I know now, like you said. But the previous comment said science has been heralding solar since the 80s or so, implying it's unsurprising. So when I rewind a couple decades (or just one), did I know? No. I think people were still arguing that the infrastructure for solar made it more expensive in the long run, that it would be so costly to implement it wouldn't be feasible, or that it would be superseded by other renewables, etc. It's very hard to tell which arguments are credible or not when everything is hypothetical and in the air and you have no expertise in the subject. That was my point. Everything is easy to see in hindsight.

That aside, yeah I'm glad solar is where it's at today. Australia has a very sunny weather overall, which makes it ideal to develop and implement, and the government fortunately has supported solar in a variety of ways, which is actually pretty amazing. I only hope something similar happens with electric vehicles.