Why is it bad form? I dont actually do it (i love my toys), but for the sake of this post assume i do:
If i put the hours in, work for it, and win it, it's mine. Why is it bad form to do anything i choose with it?
Hell, its not profitable. I earn a LOT more in the time it takes to do an all day tournament than the cost of an ISD, and i would hope that anybody getting this worked up about a game (which is ultimately quite a luxury) can say the same.
But it is entirely fairly my property at that point, the same as if i bought the only one in the store before other people get to it. There's no real difference, except that in fact other players had a much better chance to get it.