It's calling "tying" in the economic theory of monopoly. A good/monopoly product/feature is "tied" to others, to "extend" the monopoly into other competitive do

It's calling "tying" in the economic theory of monopoly. A good/monopoly product/feature is "tied" to others, to "extend" the monopoly into other competitive domains. Anti-competition laws find this harms competition, and courts have restricted it. This is why companies get pushed to allow independent repair services, etc. However, the analysis is a bit vague and difficult to enforce, since it's hard to distinguish from product bundling. The question is not whether the product is one or many, but whether there can be multiple markets, or whether the benefits of producer integration outweigh the competition benefits of consumer integration. For attention-seeking apps, clearly a context-switch that breaks attention is to be avoided. I find it interesting that multiple small switches to new interesting (shiny) things not only is more sticky than longer formats, it also seems to reduce interest in making a mode shift, to something else entirely. There are different ways to model this neurologically, with no leading hypothesis AFAIK.