Faction tech generally isn't given out on a whim. APM however is the exception because it's a company that builds ships and then sells them to corporations and the law enforcement. They also have access to the shipyards to build them. How does BPI have access to that? Alright, so the Bottlenose is sold on Sheffield, but it's created on APM shipyards then transported there.
How does it make a difference if Knight Industries operates in the Omicrons or not? They're APM ships - you buy them from APM.