They can, but most people don’t have the hardware for it. Specifically, every pokémon center has a pokémon transport unit consisting of a miniature teleporter hooked up to one or more PCs. Without that unit and a PC capable of connecting to it, there’s no link between the digital cloud and the physical world. It’s possible to have one of these units in your home as well, but unfortunately, teleporters tend to be ridiculously expensive.
And for that, I have to apologize. I wish it wasn’t like that, but there are costs involved. As in, it’s entirely possible to create open source box management software; the tools needed to do so are largely free or things I would own anyway. It’s far more complicated to create something tangible, and thus, I admit I had to seek funding via the Pokémon Cutting-Edge Technology Research Center. Thus, because the hardware was technically built on their premises and funded by their research facility, they own the patent, and I’m only allowed to produce it by consenting to a rather inconvenient clause stating any hardware I invent must be mass-produced on a for-profit basis.
Thus, for perhaps obvious reasons, this contract also stipulates that I’m barred from informing you that if one emails Cassius Cassine, the Kalos administrator, he can provide you with a link through which you can download a PDF of full and clear instructions on building a safe teleporter using cheaper materials than the ones used in the construction of mass-produced transportation units. I am also not allowed to specify that this PDF also includes thorough notes on maintaining such a unit, as home-built units are naturally less durable than mass-produced ones. Likewise, I cannot say that an easy way to get hired as a storage system administrator is showing me proof that you’ve successfully built and maintained for at least a year one such unit. Because pirating is bad, and I am a responsible, law-abiding scientist. Do not email Cassius. You cannot find his email address by Googling it, either.