Just as a thought... if the bitcoin community at large spent a great amount of time on PR and either started offering valuable services at a discounted rate if BTC is used or convinced businesses to offer certain services for BTC, you might see prices regulate and become more stable.
Bitcoin will never be able to expand outside black and grey markets as long as there are fiat currencies around because of Gresham's Law.
Ever heard of the System D economy?
All this theory doesn't help as long it doesn't manifest.