Hear me, nameless internet stranger, that you might learn from my mistakes: This is not true. Efficiency is only worth money if it increases profits - concretely this means your efficiency gain must result in the following:
1. Delivering features faster
2. Delivering features with meaningfully higher quality
3. Delivering the same features with lower headcount costs
(2) is hard to measure, so you can generally only sell on (1) and (3). During the 80s the business world learned the hard way you can throw away a lot of money on useless efficiency. If that interests you I recommend "The Goal" by Goldratt for a fictionalized account of those learnings.
* There's also a subtler point that corporate finances may mean that even if efficiency is perfectly captured, a 1% efficiency increase may only be worth 0.1% of your salary.