That wasn't the point of what I was saying...it had little to do with what the band was doing, it had to do with what everyone thought the band was going to do. First stretch of time after something like this happens, band usually goes dormant and people just assume they are done.
Alice In Chains was a weird animal because everyone thought Layne was THE voice of the band...it was really an even split with Cantrell.
In cases like Death/Control Denied, Type O Negative, Heaven & Hell, etc...where it was either the main person of the band, or there just really isn't any way to see the band continuing without one of the integral members...it is understandable that the band would be done. If Vinnie Appice had died instead of Dio (mind you, I'm only hypotheical), they probably would just replace him with someone else. If Geezer or Tony had died, it would be the same way as it is now: done. If Hetfield had been killed on the bus instead of Cliff, I would wager Metallica would be done.
It really depends on the prominance of who's in the band, and whether the rest of the band can weigh on being able to replace them (some cases, because they have some shit in a contract binding them to keep going whether they like it or not). If Corey Taylor had died yesterday, Slipknot would most definitely be done. Jordison? Maybe. If it was Sid/Chris/Craig, they'd probably be able to replace them or continue without them since they are kinda just there. Maybe I'm totally off base, but it just seems realistic to think it comes down to prominence of the member.