I have been mostly vegetarian for about 20 years. I do eat some fish about once a week, and I am not a stickler for "no meat in soup for flavoring."
I see our current issues as financial issues. Thus, I don't see that the economy can continue on $100 barrel oil. Governments are printing money, to try to hold everything together, and I don't see this as being able to continue.
Even if oil prices are too high for governments, they are too low for oil extracting companies. We are seeing oil companies cut back dramatically on new investments in drilling. These changes have mostly been just announced, rather than things that have already been implemented. Statoil and others are borrowing money, in order to continue to pay dividends. I will write a post shortly, showing some recent data Steve Koptis shows.
I don't see that we have time for the changes you talk about. Also, with $100 barrel already too high, this is a big problem. It doesn't give us the flexibility for $150 barrel oil.
I thhink you have missed some things that have happened recently that are changing the situation.