How many cows in your field. How many people in your house.
The people behind O have big ambitions. They are quite open about it when they think they are talking among themselves.
Guess what? Starting this May, if you live in the northern half of the country and have a new furnace installed in your house, it has to be something like 95% efficient. It will cost you a lot more than ones that are almost as efficient, and in older homes, it will require extensive alterations in the home to install it.
Read some of the comments at this forum:
https://www.acca.org/archives/industry-resources/government-affairs/hot-air/5808
The tougher standards will apply only in the northern states, and it is still possible the EPA will back down. However, if you live up north and think you might need a new furnace soon, I would certainly keep an eye on the developments.