IE7 being blocked by kogan.com

I do understand the sentiment – IE7 is long superseded, with IE9 being the latest and IE10 in development:
http://www.news.com.au/technology/kogan-wages-war-on-internet-explorer-users-taxed/story-e6frfro0-1226395298505

That being said, why doesn’t Kogan simply block access to IE7 users rather than try and make money off them – that is possible to do with appropriate scripting – and solves the problem of “burning cash on a browser that hit the market nearly six years ago”.

Imagine a workplace user who is not allowed to update IE, and is also not allowed to install other web browsers – to penalise them financially for something they have no control over seems unfair. Fairer to simply block access.