Yes, but you were kinda suggesting that they are swimming in money and I think it's a little bit too early for that party just yet.
And don't forget that they will continue to develop and add content to the game after release, rent/maintain a sizable server farm, and aim provide quality service. Those have been some of the reasons mentioned for the subscription model. So that's going to significantly extend those 2 years you mentioned, if we're going to assume that.
Btw. they do owe all the backers a shitload of DACs. Basically everyone who backed will be playing for free for months, years or even lifetimes. So the current playerbase already won't generate much revenue for the first few years. Unless they sell their DACs, but then the buying players still won't be generating that revenue.
I should hope that they will indeed turn a profit at some point, but I wouldn't expect it to be any sooner than any other well run and successful business. For which 3 years to profitability is considered a good average.
So while I understand your point about p2w (although I only partially agree), I can't really see DU as a shameless cash grab by any stretch. They are of course a for-profit business, but I think things could have been much worse if they had to answer to a game publisher instead.