Why does the BBC hate the shows it buys?

So you’re a massive public service broadcaster that employs roughly forty thousand people, running a number of national and international TV shows and radio stations as well as having the most trafficked website in Europe. And you buy some American TV shows to show as part of your output. These shows have a substantial fan-base. Why on earth would you abuse them so terribly!? When there was an episode of this popular TV shows that was nominated for an Emmy – an episode I might add that was particularly celebrated and considered to be a particularly special one – what would you do? Would you hack it to death and then completely neglect to advertise it – even after postponing it for two weeks so you could show the bloody snooker? Why does the BBC hate the shows it buys? Why doesn’t it buy stuff it has faith in and then treat it accordingly? Stunningly irritating.