This is something people have tried to make, but so far they haven't succeeded. Remaining differences appear to be:

• Bottles require a constant amount of suction to produce milk, which can be high or low depending on the design, but breasts require an initial high level followed by a lower level.
• Bottles generally don't deform at all, and even the ones designed to deform don't do it in the same way as breasts.

This appears to be enough of a problem that no bottle currently on the market is interchangable with a breast from the infant's prespective, but I don't see why it needs to stay that way. What's keeping manufacturers from producing bottles that take all of these into account?

(You might think that part of the problem is that each person's breasts are different and so you can't design a single bottle that will mimic everyone's, but I haven't found anyone talking about nipple confusion in cases where the same child is nursed by multiple people. So it seems like breasts are similar enough to each other that one bottle sould be able to work for everyone.)