So here's a potential business model for this: salvage rights. When ships sink, the owner generally still retains ownership of any property. Sometimes the location of the wreck is known. Sometimes it needs to be found. It can cost a lot of money to find a wreck and recover any property. So salvage rights are a principle of maritime law such that whoever does this is entitled to a reward commensurate with the value of…
At the speeds those things whiz by, what sort of materials are there that can withstand impacts and not create more debris? Or do they try to do it via relative speeds and say let them hit the "paddle" at 50mph? And in that case, might it not be more effective to have hunting "nets" to collect the objects?
Things that are not rigid and that distribute the force throughout the body (think of slapping a big slab of silicone).