It's also much easier and cheaper to build and repair a desktop in a normal tower with normal parts that you can get in the neighbour store when it breaks down at the worst possible moment (last week for example when the harddrive broke together... or the week before when the memory gave up and computer started crashing... Or last year when one of the other computers graphics card fan gave up) Open up, replace part, boot up and test. Back to work.

For a company it is often cheaper to give someone a replacement laptop than have them waste time fault finding.

"30-45 lbs"

If it needs wheels, it probably isn't a laptop!

> Some men see things as they are and ask why, I dream things that never were and ask why not

-- George Bernard Shaw

At 45 pounds, I would genuinely consider a rolling rack. My video mixer, using a Silverstone HTPC case, fits in a shorty 5U Gator case with room to spare for an audio interface and a power distributor.