It wouldn't be hard to add something the market impact assessment. Something along the lines of:
"Microsoft already has a 90% market share, and the launch of iPlayer - a service available to about 40% of the UK population in total - will make sod-all difference either way. People aren't going to choose Windows because of iPlayer - they're going to choose it because little Timmy wants the latest games, and your company insists you use Outlook for email. And businesses - who make up a huge chunk of the market for computers - really don't care either." :)
