A few points:

1) There is no legal or accounting infrastructure for large established companies to hold bitcoin in any meaningful amount.  Quite frankly, it would be negligence on the part of such companies to do so, as it would be tantamount to directly diverting gross income into an extremely volatile quasi-legal (especially for international companies) investment.  That said, even allowing bitcoin to be transacted is a huge, huge step towards building the bitcoin infrastructure and maybe towards these companies holding a position in bitcoin.

2) For years, people have been lamenting hoarders who do nothing with their bitcoins, creating a vicious and ultimately destructive cycle of price increases and further holding that would doom the currency to irrelevance.  Now that people are spending their bitcoins and the price is dropping, people are complaining of the exact opposite phenomenon.  Personally, I think that circulation of bitcoins is much more important than inflating the price.

3) Bitcoin is still in an inflationary stage - somewhere around 10% per year - and miners have (increasing) fixed costs that need to be recouped in fiat.  Frankly I'm surprised the price has held up so well.  That said, I don't expect any serious increases until the next block halving in 2016.