Well, if you already have a tablet, maybe it's a different story. But for some of us that have not hopped in the pool yet because of pricing or just simply waiting for the tablet app store be bountiful with quality apps, this is a no-brainer.
It gets us into wading into the market, and some may just stay there and not buy another tablet. Others will take on the task of putting Android on it (face it, it's gonna happen, it'll just be a matter of time), such as myself, and see what happens from there.
I'll give webOS a chance, though. But if Android is out, I would much rather have the app warehouse of the Android market than webOS's. Even though I have explicitly said I am not buying this specific tablet for the apps, and more so just for the experience, if the opportunity arises to enjoy tablet games on it, I will make the jump to Android for it.
What if iOS got put on it first? Haha. I dunno the technicalities and the likelihood, but they certainly have got webOS on an iPad....and it ran faster than it did on the TouchPad.