I wasn't expecting this comment in Hacker News. I can only agree. Indeed, this is an investment with a risk/return profile of a utility, not the technology.
The telling point, and why this is on HN, is the important threshold that a seasoned investor can buy solar to make money for the purpose of making money.
It seems a fair argument until you notice that oil is subsidized too though the relationship of these subsidies and how they compete with eachother is complicated and not worth debating.