They can't. Not really. Think of it this way: neither can wines, coffees, lipsticks or cigars. We wouldn't really want it to be possible anyway. The things we love to experience can be similar with the same ingredients, but a VooDoo Doughnut is not a Duncan Doughnut. A Godiva Truffle is not a Hershey's Kiss. And Silver Oak is not Two Buck Chuck. There is a reason why we love different brands — it's because they offer a difference. We can argue that some are better than others, but we can't say they are the same. For example, not all Cabernets are the same.
Let me introduce you to Devine Cabernet. I crafted Devine Cabernet by hand on canvas to look and feel a certain way. My swatches then got sent to the lab — like every Devine Color does — to be formulated. Then, it was sent back to me for approval. Then we repeated the process until the color was exactly how I envisioned it.
There is a reason to this madness. It's to ensure that every color I craft on canvas is the color you paint on your wall.
We had Devine Cabernet matched by different paint companies. At a glance you see only slight differences. But I believe these little distinctions make a big difference in the way the temperature, vibrancy, and brightness in a room feels. Don't you?
Next time someone tells you that you can have the very same color in another paint line, think again. That kind of magic does not happen anywhere else. Bases are different, pigments are different, colors end up different.
Those that tell you that a paint store spectrometer can do the job, they have never stood in front of a real Monet and tell people is the same color quality as the poster prints sold in a decor shop.
If you are going for Cabernet, go for Devine Cabernet.