What I'm saying is that it would give people who have no idea about Linux a first hand experience, and possibly encourage them to buy Linux only computers, which make the company more money, because they are cheaper and run faster.
My mother had no idea what Linux was, but when I installed ubuntu on her laptop, she was really impressed how fast it was compared to vista, and it did everything she needed to do on that laptop, which is basically surf the web and type up a few documents, at most, in OpenOffice. Now she uses it all the time, and as far as I'm aware, never boots into Windows, because she has a desktop running Windows to do that.
Over 90% of the computer using population has no idea what Linux is, but it's a perfectly viable replacement for Windows on a secondary computer, if only people knew about it and could test it for their needs. No one is going to buy a Linux only computer, because they are worried it won't do what they need it to, which it might not, leaving them with a crippled computer and having to buy a copy of Windows at retail price.
Similarly no-one is going to dual-boot ubuntu themselves because they don't know how to, or even what ubuntu is. And the people that do know how to are people who need to do more than what ubuntu offers them.
Again, to paraphrase myself; if normal computer users could buy laptops dual booting Windows and Linux, at very minimal extra cost, it would give them a first hand experience, and possibly encourage them to buy Linux only computers, which make the company more money, because they are cheaper and run faster.