I think oil will not go much higher because at these prices it is already starting to put a damper on economic activity. GM and Ford both announced lower sales because of less interest in SUV's. We already discussed the large cash reserves firms now are holding, so it seems they are preparing for a slow down and refraining from new investments.
There should be some canary in the mine that signals the down turn. Perhaps some pseudo-luxury like bottled water or shoes. Seeing a decline in non-essentials could point to the loss in buying power.
Unfortunately I'm not smart enough to figure out what the indicator is, or to know what to do about the coming economic decline. The last one I watched closely (1970's) was bad for all types of investments, stocks and bonds. Policies not Politics ---- Daily Landscape
Threshold market share allows you to join the oligopolistic competition on "quality" and "marketing" rather than price.
And to pick a nit with myself, this reading of Galbraith/Porter (throw in a few others if desired) is by no means universally accepted as valid or empiracally correct. It is however common currency in a lot of large corporations.