It's already happening. The Pi 5 came out four years after the Pi 4 and is between 50% and 250% faster, depending on the workload. However, it also has a base price almost twice as high as the Pi 4, moving from $35 to $60. It also consumes much more power, peaking at 12 watts compared to the Pi 4's 8 watts. The Zero 2 W is probably the last good product they'll ever release.