789
Cost or no cost, IoT should not be able to brick devices on the whim - or unexpected dissolution - of a faceless corporation.
Unfortunately too many people are trusting of monolithic entities which promise the moon and then decide what they really meant was "bend over".
I may be channelling a bit of Louis Rossman here.
That said, the other comments here suggest that the device in question still has all features when accessed from the front panel, which is a step up from a lot of other IoT behaviour. Owners who don't want to pay for the app should still disconnect it from any connectivity and keep it that way just in case the manufacturer decides to remove that functionality as well.
And if it stops working altogether without network connectivity, take the L and maybe mail it back to the company's head office with no return address. Let them deal with the e-waste.