With Dell pushing Ubuntu hardware and software developers will be porting to Ubuntu. if they dont their business will die. Linux is the future people need to get used to it. Ubuntu is the future of computing.
Pushing? Oh dear, I think you've been badly mis-informed.
Dell won't be 'pushing' Linux over Windows - far from it. Windows will still be the primary operating system of choice for Dell - and most users who go on to the Dell site buying a PC will end up with Windows unless they explicity seek out and choose Linux.
Will Dell be sinking their own time and money into developing the OS image for factory preload? Probably not - they'll most like be relying heavily on Canonical for that.
Well Dell be sinking their own time and money into setting up a full Linux support department for people who have bought their PCs? Again, probably not.
Dell know their market, and they know that most consumers and businesses will want Windows on their PCs, be it for the age old FUD of 'lock-in' or simply because people don't want to spend the time re-learning a new OS - the fact that Dell are offering Linux as a factory option, is not a Windows-killer.
Dell are doing this to play into supposed 'demand' that their ide-storm site indicated to them, but lets not forget that such sites have been heavily targeted by Linux proponents such as those who frequent Slashdot - which has most likely given seriously skewed results to Dell, who I predict will quikckly learn that the demand for Linux is actually pretty small.
A whole huge combination of factors will have to come into play for Linux to topple Windows on the desktop - factory pre-load may be one of those factors - but it's not a major one, not at all.