I think I've mentioned more than once that while the gesture appears on the face of it to be noble .. the DNG file format may not be what THEY!! want you to think it is.
My take is that for the next 10 or so years a lot of people will be suckered into this market movement.
At some point they will notice the lack of any real improvement of the software over the preceding 10 years that they have paid for it.
Only then will they consciously consider that while a once off up front cost of ... say $700, or $1000 may have appeared to be quite a large hit at the time, it's still probably less then the $200 or $300 a year that they have paid for the preceding 5 years up to this point of revelation.
When my copy of Office 2010 ceases to have any relevance, I will completely move over to Open Office for good.
For perfect software, I'd gladly pay $1000 or even $2000 up front, and be done with it.
Apart from one or two obscure programs I have ever used .. not one fits the bill as 'perfect' software, and FWIW, in general they usually end up being at the extreme end of perfect.
If not in usability, then in stability or performance.
But I have no issue paying $200 for software that may not be perfect, but one that has not required any more financial input from me for about 8 years!
$200 over 8 years .. well it's easy math to do. And that's what good software should cost on an annual basis.
Strangely tho, the two programs I classify as 'perfect' have cost me either next to nothing($25, about 10 years ago) or nothing(about 6 years ago).
Actually thinking it about it more, that $100/yr for Office doesn't sound too bad to be honest.
If it weren't for the fact that the kids get tablet/laptops at school and they come with whatever Office version they need for school, I'd have been tempted at that price.