The problem are alpha accounts, not only can they mine in a venture for free, but they can take out billions of isk worth.
The whole game is designed around people having to spend a fortune to do these kind of jokes, awox? 1.5 bill please, spy and get caught? 1,5 bill please, being anoying? 1,5 bill please, blacklisted, and now you require a another 1,5 bill to do it all again.
Are you getting the point here? 
(are you?)
That’s why it’s possible, it’s not free, Oh wait it’s free now
Learn to use your 
Good to know
The thing is to prevent alpha’s from joining and leaving corp inside player owned space.
Let’s say they are not allowed to awox anymore, they can’t go like a trojan horse get in and quickly leave corp to attack former corp members anyway.
I’m not saying these mechanics should be banned, what I’m saying is not for free!, that’s what I’m pointing out.
The whole game risk/opportunities/whateveryoudo is based on a currency you can translate to real life currency,that’s what the whole game balance system is build on from it’s core.
ccp please protect us from unnecessary mental illness and their fumes in some extend.