What's it called when you're forced to purchase a whole item when you only need a part of it?

Is there a word to describe the situation of being forced into paying for something sophisticated and often expensive when you only need a part of it? An example that comes to mind is that of one of the subscription-based online services that offer dozens of benefits but you only purchase it for one or two of them.

Edit: To give an example of how I want this word to be used in a sentence, suppose that a company sells two models of a widget – let’s call them A and B. A customer might need more features than what widget A has, but not nearly as many features as model B has. But because there are no models in between widgets A and B, the customer will be forced to purchase widget B and most of its features will go unused. Ideally, this situation could be described with the word I’m looking for in a sentence like

a customer {maybe word} a more expensive model because {maybe word}.

One of the words that was suggested is “upselling”, which is very close to what I’m looking for, but it implies that the seller intentionally withholds a cheaper, simpler item in order to make more profit. I’m looking for a word that doesn’t imply any intentions, only states the fact that the purchase was an overkill for the task in a situation where there were no other options.