Companies like Shocker really f**k up the business prospects of other small publishing companies and harm the reputation of all small publishing companies.
I have ambitions to go into publishing if I can get my small graphic design/ printing company into a good financial position and producing small scale comics could be a possible entry gate into bigger publishing projects. I would hate to be thought of as a similar company to these jokers.
I wouldn't expect any comic creator to accept a deal like that offered by Shocker. I certainly wouldn't offer contracts like that to someone as they have zero flexibility. Shocker appear to be expecting 'first choice' on all publishing rights and that is a ludicrous idea. There aren't even any buy out clauses or anything like that and if a creator signs with that lot then their properties are practically being stolen.