Just bought Psyconauts the other day. Being my favorite game in the world i quickly jumped on the cheap price. Today i notice steam has it for $2.49. my question is, are we going to be able to get a steam key activate this on steam?

I'm not aware of any cases where GOG has offered Steam keys for any game bought here. So it's a pretty safe bet the answer to your question is "no".

Not sure why GOG would want to relegate customers to Steam.