Oh that's easy. Dotcom Boom and Bust ended one era of the web right around 9/11, and you get a weird era between 2001 and the release of the iPhone where there'

Oh that's easy. Dotcom Boom and Bust ended one era of the web right around 9/11, and you get a weird era between 2001 and the release of the iPhone where there's a lot of content posted on Newgrounds or flash game portals like Miniclip. An era where people still got information from Magazines and got demo discs, and people were discouraged from sharing their real name or personal information online instead of being required to provide it in order to create an account. Steve Jobs refused to put Flash support in the iPhone justifying it through security reasons but the real reason being it undermined the walled garden and iPhone app marketplace, and Android didn't think it would be worth it either, leading to even Adobe dropping support in 2011 ending that chapter of the internet entirely. When 100% of your users access a website through a desktop computer you are going to design it one way. When half your users are mobile and half are desktop it's going to be designed a different way.