Because they planned a limited run?
British TV does that all the time and nobody faults them for it.
Some people are praise the Brits for quitting before they absolute have to.
Not everything has to run until people are sick of it.
In this case, people were sick of the show to begin with, so not trying to stretch its run out to eternity was a wise move.
It filled a hole for a while in a schedule of stuff that wasn't really much better or more original.
I doubt the replacement will last much longer - and that won't be intentional.
Executives make decisions every day.
“Will this make us money, or lose us money?”
If an executive makes a decision that he knows will cause the business to lose money, then why did he make that decision?
Safety concerns? Long-term payoff? Public goodwill?
Propaganda.
I hope the businesses that advertised with this show lose their shirts.