I honestly think the only reason I would be upset that someone "ran out and got that doll I was talking about" is if their motivation was simply to rub it in my face that they bought it first. Then it wouldn't be about the doll at all, it would be their desire to "one up" me. Whether it was me personally, or someone was doing it to someone else, it's not a nice thing to do, and the person with such a motivation would not be someone I'd consider a friend at that point.
Like it was already mentioned, it's not a contest, and the important thing is to enjoy your own dolls. I personally LOVE seeing other takes on sculpts I own or like. I ADORE Cirquemom's ResinSoul Dai, Katja, but she is SO different from Angel, my own Dai boy, it's like night and day. I've seen some gorgeous RS Wu and Dollzone Mo that I love, too. Every sculpt has potential, and I say the more the merrier. If someone sees Angel and he makes them want to go out and buy a ResinSoul Dai, then I'm super flattered and pleased and I would stalk that person's photo galleries, to see what they did with him/her, and squee at every new picture posted.