I don't think it was ever competitive. i can't quote numbers, but for a very long time, an enormous chunk of their profits goes to supporting retirees. My Uncle worked their for 5 years in 1962, got into a car wreck and retired on disability from GM. He's in his 70's now still collecting. Love my Uncle but... Have you ever thought about how the Japanese and Chinese buy our scrap metal, send it in big boats back to Japan, China, Korea, etc.. and can re-smelt, rehab it back into usable metal, make it into automobiles, put it back on a boat, and ship it all the way back to the US.....and then make a profit...big profits.
I worked for a big pharmaceutical company. The waste was incredible, and people were not used efficiently. There was no communication between pharm companys on what worked and didn't work so drug trials were repeated at the cost of millions of dollars with the accepted idea that that chemical compound may have already been tried and failed somewhere else. I don't know the solution to that, drug companies want each other to fail and are extremely competitive and guarded. It may sound trite, but when you've spent the whole day decapitating hamsters to look at their lungs for a possible new asthma drug, you wonder if there isn't a better way.
I drive a Prius. I bought it in 2001 when gas was still around a $1. People thought it was stupid. I'd have a hard time seeing it in the parking garage amongst all the SUV's. There are situations where people need oversize vehicles, i have a horse trailer and need a 1 ton truck to pull it, but for status or being so fat you can't fit in a normal car are not good reasons. I hope those people pay $10 a gallon. When you travel overseas, you see that people have been paying $5 a gallon for gas for a very very long time. I can't say Mass Transit is much of an option in Arkansas, but in most countries mass transit is unbelievably efficient.
You can argue that if we don't have unlimited access to cheap gasoline the price of everything will skyrocket. But ask yourself, next time you by asparagus from Chile, why don't we act more self sufficient in our production of food stuff in this country?