Exactly what tintor is saying. We have access to special lanes including fast track lines, pilot/crew lanes, or the diplomat lines. In other cases, our agents are able to simply walk travels to the front of the immigrations/customs lines.
Wow, how did you do that? Do you have deals with every airport, and part of the cost is paying for the faster line?
I've been through a priority queue in business class, but this sounds like a much cheaper option if you just want to fly economy. I will definitely try this out on my next trip.
Did not really think about this before, but if airlines are able to purchase this service for their business class customers, then other companies can certainly do it as well. For example Norwegian has an option to purchase access to priority security check on certain airports in their mobile app.
Actually a bigger business opportunity might be to sell the "pass the queues" access on the fly (without pre-booking). In most cases I would be a bit hesitant to spend money on these in advance, but if things don't go as planned I might be interested in paying to speed things up.