I too stopped buying Photoshop when the subscription scheme was introduced. I've continued to use CS6, which still satisfies all my needs, although there do seem to be a couple of contenders in the marketplace to have a look at.
On1 is one of them. ( I do notice that they have a subscription Plus version as well, which suggests that you don't get all the bells and whistles with the bought package).
You may or may not be right, but I think there have been significant shifts away from the subscription Photoshop CC for the hobbyist and general enthusiast.
I recently attended The Photography Show at the NEC in the UK, which, as you know, is a major show in this country.
I didn't sit in on any closed theatre presentations because I only made a last-minute decision to go, and those presentations had to be pre-booked. However, there were plenty of open theatre presentations, and I sat in on several, and for the first time ever, I saw no use of Photoshop or Lightroom.
Indeed, Adobe in the past, have had a major presence at this show, with one of the largest theatres, and they weren't even in attendance this year.
One of the larger theatres was doing a presentation of Affinity Photo, and this was proving popular, with standing room only. (Another contender to have a look at I think, as a single payment package.)
For the features it offers, I personally think it is a bargain buy, and as it was being offered at a one-off payment special Show price of £25 (!!!), there is no wonder that the sales counter was busy.
I chatted to lots of people throughout the day, mainly amateur users and enthusiasts like myself, and would estimate (although not statistically significant!) that three quarters of those who used Photoshop had not moved into the subscription version. Maybe that is why Adobe had decided to drop this show as a lost cause, because in the main it is regarded as a show for enthusiasts.
I hasten to say that the people I spoke to tended to be hobbyists, but I would expect that the real professional users have moved along with Photoshop and Lightroom automatically. Why wouldn't they?
Does anyone else who attended that show have any opinions?