Why auction before launch main net?

why bother launching anything if you could just collect some Ke$h and then disappear in thin air like those C11 algo devs used to do a lot recently... though I admit we need moar pre-sale scams so people stop investing in MNs. Mining is dying because of that and that means people would stop even reading about new coins unless they got some 20k bucks to lose in thin air. And there's not many of such ppl in the world even in the UE/US
