I don't see the issue. Nobody is forcing Fog Creek to make the glitch service free, that was their own choice - and as long as charging money for your glitch-based service isn't against the glitch ToS, there's no reason not to do so.
Glitch' FAQ says they expect to eventually charge for a premium account with fewer resource restrictions. Glitch' business model is presumably then to get other services off the ground, make those services big enough to start earning significant money, and then have those services upgrade to a paid plan once they (hopefully) both earn enough money to afford it and are big enough to need it.
From what I can see, this Writt thing is doing exactly what glitch's business model wants people to do.
