And even if it was the case that they had to pay for domain names for all 200 sites, it would cost just under £1250GBP a year (£6.21/domain) if they bought them off Go Daddy, assuming they couldn't get some kind of bulk discount and they used .co.uk domains (Go Daddy doesn't list a bulk discount for .co.uk domains). If they used Go Daddy's .info domains and got the bulk discount they could do it for less than £1000 a year (£4.96/domain) which is about the cost of a MacBook Pro. It's not negligible, but neither is it exactly a huge outlay for the BBC.
(Also, these are the renewal prices, not the heavily discounted first year prices which, for .info, come to less than £50).
Ah. The AC above me's source says the statistic giving the number of internet users is from June, while I've assumed it's from January (Wikipedia just said 2010). This means my spreadsheet will slightly overestimate the time reqired.
Assuming, however, that el_segfaulto's value for the rate of change of the population is correct and constant at an increase of 25,000 people per month and the proliferation of internet usage remains constant (and that all internet connections may be detected by Hadopi), it will take just under 153 years to disconnect all internet connections.
Yeah, up until a few years ago I had a plan with Bigpond (quite an old one, granted) for 256/64kbps, 12GB/month at $59.95 per month! And that plan was called something like "Liberty-unlimited". Yeah. So I switched to Internode. A very good move! That said, by American standards it's still shocking...