What? Loss to humanity? Sorry but he was no Steve Jobs or even close. He exited Microsoft in 1982 and essentially spent money that he made off of Microsoft (to do some good things let's say if you forget the patent trolling). Not minimizing what he did that was positive but don't compare it to Steve who actually did 'change the world' (no Jobs fanboy but need to point out what he did was way more than Paul Allen).
Separately that OS that made Microsoft as everyone knows they bought from another company.
A space company, half a billion into brain research, tens of millions more in other fields, environment efforts, multiple sports teams, cultural investments, etc. That's a fair loss, and I think the first few qualify adding "to humanity" as well.
Separately that OS that made Microsoft as everyone knows they bought from another company.