This is quite distinct from providing two products together. You can go to the store and buy an entire PC with Microsoft Windows and Microsoft Edge. Then you can install Firefox on it, or remove Windows entirely and install Linux. The trouble comes when you can't separate them anymore.

Then in order for a competitor, and therefore the customer, to replace the banana the customer wants to replace, and which would otherwise be easy to replace, the competing product also has to replace the gorilla holding the banana and the entire jungle. Which is bad for the customer.

And tying is illegal. Typically it was in the context of a company with a dominant market position requiring you to buy products in a related market if you want the product you had to get from them, but now they're doing a new thing. Not only can you not buy them separately, you can't even separate them after you've bought them -- which should be a violation regardless of what kind of market position you had to begin with, because its primary effect is to harm competition. But this stuff is pretty much invented by judges as they go along, so who knows what they're going to do.