Strange, quite the opposite experience here in Canada.
Our biggest pharmacy (Shoppers Drug Mart) and dollar store (Dollarama) both with thousands of stores are going to be deploying self-checkouts soon. Various grocery stores and big box stores all over the city already have it.
Ikea only has 2 stores in the area so even if they remove it it won't be that noticeable in terms of deployment...
It may be Imea is trying more of a customer service thing for certain stores ala Amazon's focus on human interactions vs actual ROI or popularity.
IKEA is phasing them out in Germany, and all German store chains that had self-checkout have since removed them, or are in the process. There is not a single chain that is actively deploying new ones, or keeping them.