I don't really think that there is any one show with which escapist couldn't "stay popular". Even Zero Punctuation could end, BUT for that to work, there would need to be a new equally big show to compensate the loss of it.
Escapist would be in big trouble if ZP would be pulled NOW without any transition ready, but if something else interesting were available, pretty much every single show could be pulled.
So, as so often the significant question isn't so much the "if" but instead the "how".