Domain throttling

So godaddy has responded to charges of  domain transfer throttling.  There is also the issue of holding domains once the tld is searched for in godaddy, which prevents buyers from changing their mind at the last minute and picking another registrar.  But making domain transfers to other registrars complicated or even blocking those transfer is big charges that probably will end up being decided in court with possible slander charges. The question is are there legit reasons to throttle access.  You can probably think of a few.