The problem with all of this, and I agree with the majority of the comments, stems from Commissioners at a Producer level or above.
There is plenty of talent around, but the main gripe is from writers who are not given enough of a platform, in order to hone their craft before being released into a larger format. This has been the case for a while.
Example : The Mighty Boosh ( love it or hate it ) was first put on in a late night slot, on a minor digital channel. When it started to pick up a following, and after about 2 seasons became hot property, THEN it was put into a prime time slot where it could shine. In other words, it was given a chance to fail, and also a chance to succeed.
Other comedies were the same. Red Dwarf and Blackadder immediately spring to mind, as they both took a little while to find their audience.
Many comedies are not given the chance, and they are pushed out straight onto the main stage, where if they don’t IMMEDIATELY get ratings, then they are axed. The execs are hungry for numbers, not talent, and are not prepared to take any risks, which may result in a few turkeys, before they find gold.
The same is true of Hollywood. Don’t like the same types of films playing in your local cinema, same problem.
Here’s an Interview with John Lloyd, who produced Blackadder, Not The Nine O’Clock News and Spitting Image.
http://www.telegraph.co.uk/culture/tvandradio/10803185/John-Lloyd-TV-comedy-is-a-disaster-which-could-sink-the-BBC.html