The dual to it: there is absolutely no advertising or public-awareness effort for local OTA programming (whether radio or television.) The OTA broadcast stations for a given place aren't given as part of "considering moving to [city]" guides, "local free resources" lists, etc. Ask the average city-dweller and they'll likely have never seen a digital antenna, and won't be able to tell you whether there
is any local OTA content to pick up.
With OTA television especially, if the relevant stations also exist over cable/satellite/telco-fiber/etc. then those stations don't bother to announce the fact that they broadcast OTA.
For example, here in Canada, you can get CBC (i.e. government-sponsored) television programming OTA pretty much anywhere, but there's nothing to even suggest that possibility; I just found out because I went and bought a DTV antenna on a whim. Meanwhile, the CBC emphasizes the multi-channel accessibility of its radio programming (OTA, web streaming, podcasts, etc.) at every opportunity, doing heavy cross-channel advertising. It truly feels like "CBC Radio" is a public service they're trying to bring to as many people as possible, but "CBC Television" is, for all intents and purposes, just some cable channel.
A lot of the problem comes down to low-level discoverability, though. OTA DTV is broken for discoverability purposes, in that a degraded signal may as well not exist. With analogue OTA TV, you could buy a TV and turn it on without any wires connected to it, and it would still scan for channels and display a few fuzzy pictures peaking out of the static, and it'd maybe occur to you that with the help of an antenna those could be cleaned up. With a digital television, you just get a "No signal" infobox.
The "fix" would be to make televisions somehow able to "see" the weak DTV signals around them again with no wires plugged in. We'd have to re-think OTA digital broadcasting completely to enable this: either to attach to each digital channel a sister "wideband, low-data-rate, fountain-encoded" channel (to let the TV pull a 240p signal out of noisy 1080p-equivalent bandwidth, with the implication that an antenna would "upgrade" the picture); or to do away with live-format OTA broadcasting altogether, in favor of heavily-redundant packet-based transmission, such that a 30min program could be buffered in advance over several hours, and then "scheduled" at the client-side onto the channel.