Are you being reserved?

The BBC apparently are to do a one-off remake of "Are you being served" and other of their classic sitcoms of yesteryear.  Why??  It's not as though the originals have disappeared into a black hole.  They're still out there and available on the nostalgia channels.  So why??  Is this an acceptance that current sitcoms are rubbish and that present-day writers are bereft of ideas?  This remake will have to be very, very good if it is not to pale in comparison with the originals.