Tony Vargas
Legend
1e->2e and 3.0->3.5 were pretty incremental, but sold well enough.I'm gonna say, I think the "incompatible system" arguments are a bit thin. The point of a new game is to sell a new product. An incremental change over a previous product isn't going to do that.
OTOH, Paizo probably doesn't want anyone feeling PF2 is a 'cash grab,' like 3.5 was accused of being for a while. They are very conscious of their fans, and, in a sense, owe them to WotC making mistakes like that.