I'm old enough to remember a time when you bought a copy of a game and played it locally. Most games were around $60 and we paid it. It is only more recently that someone decided that viewing ads was a better way to pay for games - you got what you wanted and no one values games anymore.
Even back in the day, if I paid 60 bucks and spent less then 40 hours solving the game I was disappointed and felt like I paid too much. I invested in the hardware and software and I expect something out it.
Happy to pay for your game but don't hobble it or subject me to ads.
They still sell plenty of games as a one-time $60 purchase. Though instead of owning a physical copy, you might only have a key to some DRM system.