Ego

Many top pros feel they earned their spot on the top and that someone who sits at a computer playing poker for 10 hours is somehow not the same as someone sitting in a casino grinding for 10 hours a day.

Many internet pros simply feel they are the best or have created a system where they can't lose and that they are the "new wave" of poker players... same thinking as the dot coms when they were the "new economy"... both had good runs, but when all the smoke cleared, many with the shaky principles failed but many also stayed in after the bust

And some pros simply feel the internet guys are on a good run lasting a year or two while these pros have been on a good run for a while... both are watching to see which run ends first... and use that as proof to whatever their belief is