That's correct.  First to market has to reap the benefits, that's the only incentive for even attempting to be first at something unproven.  Granted, everything about bitcoin is speculative.  It's a new currency, only a few years old.  It still has limited adoption rate and usability given comparison to the rest of the world.  And it is exceptionally volatile, easily trading in -+ 10% a day.  

With all that being said, speculative can also be extremely lucrative.  Bitcoin has established a pretty solid history, it averages somewhere between 30k and 50k transactions a day.  The current price has actually hit a floor around 70/coin and rebounded from there.  It has peaked around 260/coin and is currently facing a ceiling at approximately 111/coin.  

Take a step back and look at the market as a whole and you see that a large amount of USD is constantly being pumped into BTC right now.  MTGOX CEO made a statement in April in an interview that between 300-500k was being withdrawn for every 1-3m coming in.  ASICS purchases are direct investments into the Bitcoin economy.  There has been millions spent on ASICS in the last year, probably in the realm of 50-100m at a minimum.  This has a positive impact on the price of bitcoins.  When bitcoin spiked to the 260 level in April, it was shortly after the introduction of ASIC miners into the community.

We can "Speculate" that growth will continue based on the current trend line.  That would indicate the price of BTC has to rise.  As adoption rates continue in businesses across the globe and BTC finds more uses, you will see an increase in demand as well as an increase in transaction volume.  When demand rises on a limited supply, you will also see a price increase.

The point here is that this is a speculative investment.  It's not a foolish one if you understand the risks, BTC could suddenly see massive regulation, drop to less than 25/coin, and all these ASIC's would be far from profitable.  Such is the risk you take, tread carefully.