I believe the impact will be much bigger, worse, and most importantly, faster.
First of all, the cost of oil projects into many areas of our lives - it increases cost of transport, food (since fertilizers and machinery is fossil fuel dependent, plus biofuels compete for arable land), healthcare (plastics and medicines), and it also increased costs of globalized networks - distance costs more and more money.
That said, the impact is far greater on poorer people - after paying for their necessities, they are left with less extra money that would serve as a buffer for further price increases. That means the social tension will increase even more - the results can be already seen in Africa, but it will arrive to US, Europe and India soon enough. That means rise of political extremism, strikes, revolts, clashes with police, and of course, revolutions.
All eyes are now on Saudi Arabia - if their production of 10 millions of bbl/day is disrupted, the developed world will collapse, simple as that.
Eventually, the demand will outstrip so much supply that the liberalized energy market will cease to exist, replaced by bilateral deals between producers and those consumers, who have something to offer (water, food, protection, etc) - this is mentioned in the risk report of German and US army compiled some 2 years ago.
All that is expected within the following decade.