For clarification, here is the precise disclaimer on looting found in every single Mission:
"A Note on Loot and Looting
Gamemasters should be careful what they allow players access to, because they can and will try to steal everything not nailed down (and even then, they
often have pry bars and claw hammers to deal with those nails). Shadowrun Missions operate under the assumption that two players who have run the same missions will have roughly the same amount of resources available to them (give or take some negotiation and a little bit of minor loot fenced), so when players are able to steal and fence a lot of gear or are able to get their hands on high-priced vehicles, cyberdecks, or foci, it can unbalance the game and make it unfair to players who didn’t have the opportunity to get those items. Gamemasters should avoid letting the players get into a position to do high value looting whenever possible." (Emphasis mine)
If the campaign was against players looting, it should simply state that looting is not permitted in Missions. I personally run my tables as it is written, which is avoid high value looting.
What is high value, though? That is somewhat subjective. I personally cut off the additional loot money at roughly 20% of what they are earning for the run. So if you are getting a 10,000 nuyen pay day, you can loot up to an additional 2,000 nuyen in gear if it is available. The one exception to this is vehicles. If a runner doesn't have a vehicle, and the Mission states that the baddies roll up in a low or midrange cost ride (say, a ford americar or a gmc bulldog), I will let them loot the ride one time so the PC has a ride.
What are the downsides of this? When I run, it is the following:
- Notoriety: If you are witnessed looting the dead, you get 1 point of Notoriety per scene you did so. If you are peeling ware out of someone's body, it is an additional point of Notoriety per body.
- Ownership: A lot of matrix connected items require the ownership to be changed. As this is a downtime action (where hits must be bought), doing so successfully requires at least 15 dice on a Hardware + Logic test. If you can swing that? Cool, enjoy your new item. If not? I'll need you to explain to me after the Mission how you either hire a contact to do this for you, or a good plan for how you evade law enforcement.
- Time: Looting takes time, and sometimes taking extra time is a bad decision. If you are in a time sensitive situation, such as looting in a corporate enclave, expect additional high threat to arrive in the middle of your little loot spree.
If players are smart about it, I generally let them get away with it up to that 20%ish additional nuyen.