As in the title. The unlock that doubles income five times makes 40+ research unlocks and rapid ascension up the factory tree possible. The time between my getting the first P3 unlocked doubling and getting to the final factory type was maybe two minutes, skipping most of the factories altogether since I was earning so much I was unlocking multiple factory types in a single tick.

Thanks for the detailed feedback this is super helpful! You're absolutely right: the income-doubling upgrade currently scales way too fast, which causes the prestige loop to accelerate into endgame levels after only a few points. We'll rebalance this in the next update by reducing the multiplier effect, adjusting factory unlock pacing, and smoothing the mid-game curve so players can actually experience all factory tiers instead of skipping through them.