It's not terribly unusual for a show to get dropped by a network and picked up by another; some other heavily serialized genre shows that have changed networks

It's not terribly unusual for a show to get dropped by a network and picked up by another; some other heavily serialized genre shows that have changed networks include Buffy (started on the WB and moved to UPN), Stargate (started on Showtime and moved to Sci-Fi) and The Expanse (started on Sci-Fi and moved to Prime Video)