Possible, but not probable.
Conservative domination in Alberta was/is a reflection of a very strong economy which is a recipe for the status quo. The conservatives initially taking office in the 70's from a social party was a reflection on the oil boom which obviously propelled the economy. (I'm not to familiar with Ontario)
There is way to much uncertainty now (globally) to assume the conservatives will be able to ride a wave of affluency. IMO, there is a much stronger chance of a NDP government winning an election over the next 40 years then the conservatives remaining in power for that long. Again, possible, but not probable.