Adding advertising into the mix almost always makes the incentives align more poorly with the customer's interest. For example, the refrigerator manufacturer now has an incentive to increase food spoilage to increase ad conversions.

>Having a subscription can actually be beneficial in terms of incentive to keep up supporting the product in my view

So you want to pay them to show you ads in the hopes that that means they don't stop supporting your refrigerator? What does that even mean? They're not going to extend your warranty.