The real reason Gen 3 paddles will slowly fade out
It's not because foam feels superior (it doesn't). Rather, it's because paddle companies aren't going to produce durable-grit Gen 3 paddles. No point charging extra markup for long-lasting grit if it's on top of a core that's vulnerable to crushing prematurely.
Durable grit will take over the advanced-player market, it's just a matter of time. Those who buy a paddle without a marked preference for lasting grit generally aren't the type of player that would be so concerned about Gen 3 feel, either. Eventually, the incentives to keep producing Gen 3 paddles will dwindle.
My thinking is that companies will continue to play with different foams and densities to get closer to that Gen 3 feel. Already some kinds of MPP are getting closer. Additionally, players' preferences may also start to evolve toward some characteristics more associated with foam.
Any guesses on what the timeline of Gen 3 obsolescence will be? 2 years? 5?