There are some brilliant sitcoms. Hell this article even goes on to mention five hit ones.
Problem is nobody watches television en masse anymore. Short of sporting and live events, the chances of getting anything like 10m viewers is long gone. Most hit shows hovver around 3-5m.
And shows that would have got those figures in the 90s as cult favourites? 100k viewers now if yer lucky.
Some amazing shows like Frayed are buried away on Sky where no-one will see 'em too!