Looking at this product on Amazon right now, there’s zero indication that there’s some subscription component, nor would I have any reason as a potential buyer to suspect that there’s a garden, much less a wall.
To say nothing of the ridiculousness of the restriction itself. For all of the problems with walled gardens, they generally come with tradeoffs, some of which are beneficial.
This looks like nothing but pure dark patterns and greed.
You began by strongly implying that people should have known better for buying into a walled garden.
My point is that people had no reason to believe there was a "walled garden" (which seems like a misnomer), nor any reason to believe they would not "own" the bassinet they purchased.
They have every reason not to believe they own the bassinet, by the simple fact that a subscription is required to use it!