Nooooo, Killy. All of us are somewhat guilty of speculating at this point, but what is known is that Gretzky wanted to (and apparently could) play with professionals as he was approaching 18 yrs of age. Why should he wait two years when there was a perfectly acceptable -- to him -- alternative to the NHL right now? While he ended up being underpaid in the decade that followed, at the time he signed, its' apparent he was the top paid pro hockey player in the world, no? [See Ogopogo's salary data from 1982, above.]
Secondly, BB and you are surmising that somehow Badali was the mastermind behind Skalbania, but the Wiki article does offer a citation, which unfortunately is a book:
Hunter, Douglas (1997).
Champions: The Illustrated History of Hockey's Greatest Dynasties. Chicago: Triumph Books.
ISBN 1-57243-213-6.
So we have an actual account saying this was Skalbania's doing, but you're off on the Badali tangent now.
@C58. I like that blog and blogger. However, he admits he's going from memory, and the newspaper links don't really shed light on who the originator of the personal services contract was in this case.
I'm speculating that given the money involved and how much he'd benefit (to even Wayne's detriment), it had to be Skalbania.
If Badali was such a great player agent, he should have built something into the contract that wouldn't allow his player to be "sold" or have absolutely no out to the contract.