http://www.heraldscotland.com:80/news/home-news/scots-stores-hit-hardest-by-online-boom-1.1110996
Probably doesn't include bike shops (yet) but will increasingly affect 'the high street' and reduce choice if/when people 'shop local'.
But, as always, things change! Princes Street wasn't designed to have shops and in many places corner shops have reverted to houses.
And who knew we needed so many cafés??