I will make an attempt to clarify #4 in one quick sentence but the rest you can read a little more for.  Everyone who has contracts at this point in time is an "early purchaser" of contracts.  The company is still young and people should not be looking at this like it's all going to end in 3-4 months.  I can't count how many times I've stated Bitcoin is not a sprint it's a marathon.  For over 2 years people said that graphics cards were not profitable and in 4-6 months people will stop mining so much, but every time someone said that the price went up and they remained profitable.  Change =/= Death.