Whats a good carry counter to void?
If the game goes really late, there arguably isn't one. He can attack you for five seconds uninterrupted. If a late game hard carry Void gets you in the Chronosphere one on one, he can do, conservatively, about 12,000 combined damage (for example Daedalus-Divine-MKB-AC-Desolator-Moon Shard with Travels). The -12 armour from Deso plus AC means that most heroes will be at maybe 50% damage mitigation, for, very roughly, 6-7000 real damage as delivered.
I don't think there are many reasonable carry builds that give you enough HP to withstand that. Skeleton King can pop ult and stand to fight after the Chrono is done, but who else? If Void gets you in the Chrono, he wins.
The real solution is to have supports.