I have never heard of a software company that offers commissions like this before, personally. I've also never heard of companies that expect devs to leverage personal contacts on behalf of the sales team.
ive never seen it for sales either, but ive seen it for recruiting. get everyone in a room, give them a linkedin search, and tell them to add people to a spreadsheet for sourcers to reach out to. i always nope out of those, they cant really force you to give up your friends, so id just ignore any expectation of leveraging contacts