I think this sentiment (pro users want to upgrade their hardware) is inaccurate for most professionals. Hobbyists and freelance/self-employed may want to upgrad

I think this sentiment (pro users want to upgrade their hardware) is inaccurate for most professionals. Hobbyists and freelance/self-employed may want to upgrade their hardware but a professional generally doesn't care. They just want a machine that works and a reasonable path to a new machine that doesn't affect their productivity. That upgrade path is really smooth on OS X. Migration assistant plus thunderbolt cable plus target disk mode makes it really easy.