But there are people for which netbooks can deliver what they're looking for. This is called STP (segmentation, targeting, positioning) and is part of a company's marketing mix.
A lot of people dismiss a product or an idea because it doesn't fit their needs ("Why would I buy a Mac when I can get an equivalently-specced PC for $400 less?") and act on the assumption that people who do buy such products are ill-informed, stupid, or need to be "shown the light" -- when in fact they simply have different attribute preferences (read: like different things and/or would pay more for those things). People have different tastes, wants, and needs and in general, if somebody thinks a product is stupid, the product is probably not targeted at him or her.
FYI this is something that is pretty important to keep in mind if you are running a business, as it is relevant to all businesses in being a fundamental portion of marketing*.
*marketing meaning the entire marketing mix and not just advertising [which is actually a pretty small part of it]
In order to make this post less douchey, here is some actual info on how you might install w/out an optical drive:
Install from a network drive (I haven't checked the video so sorry if it sucks but you can google more on it if needed)
Install via flash drive
Or, buy a USB external optical drive and install it like that.