D&D and Pathfinder are like Baseball and Softball, maybe. But going from D&D to Fate or PbtA is like changing to football or fencing. It’s very different. Trying to get someone who’s playing Baseball to take up soccer is tricky. D&D is baseball. Pathfinder is softball. Easier transition.
I think it’s an error to treat “I play DND” the same as “I play RPGs”. It’s like “I play baseball” vs “I play sports”.
There are too many reasons to succinctly list why people might be sticking to DND.
In my experience, you’ll have better luck finding players who want to play something else rather than trying to convert DND players.
I think more like “I play baseball” Vs “I play softball/rounders/cricket”.
It’s not that difficult to convince people who enjoy little league to try standard baseball.
D&D and Pathfinder are like Baseball and Softball, maybe. But going from D&D to Fate or PbtA is like changing to football or fencing. It’s very different. Trying to get someone who’s playing Baseball to take up soccer is tricky. D&D is baseball. Pathfinder is softball. Easier transition.