If a company can pay its staff with BTC, then it is possible for the BTC price to be higher.
We need jobs getting paid with BTC, otherwise its pointless becuase only early investors can have BTC, most people will not risk their fiat. The fundamental part of a successful currency is salaries being paid on it.
This is actually what would probably be needed to drive BTC to $10,000 and beyond. Even something small like 5-10% of salaries, and people wouldn't really think twice about it. It would just be done, and it would create this large and constant upward buying pressure. If this got out of control to the point where everyone was doing it, BTC probably would go to $100,000 even. The amount of BTC being bought from just small fractions of all salaries would be huge.
First we need the big mass adoption phase, which will hopefully come in 2015 with Paypal integration. Then we should BTC acceptance popping up everywhere. Only then will the majority of people start accepting BTC is not a scam. From there it could happen that people start requesting small fractions of their salary people paid in BTC. This to me would be BTC reaching its full potential. It would be out of the speculation phase at this point.
Unfortunately I just don't see it happening so quickly. Realistically, I'd expect some like this to pick up pace 2018-2020. Mass acceptance isn't going to happen overnight even with Paypal integration. You'll still have people bitter towards BTC that are going to require nothing more than time to soften up towards it.