Hey guys. Yes. The FCC does not allow face-programmable business band radios. It might be possible to find a non-compliant (illegal) radio that will do this, but here's the problem:
Unless you do some homework ahead of time, there's no way to know if that frequency you're manually keying in is being used for something else in the area. There are a handful of popular "desert" channels that are walking on emergency services. This is why we do not program them into our radios. A few years ago, KOH was forced to change their 2 main frequencies because they were walking on an ambulance service. That year, we programmed about 4000 radios on the lakebed to get off-roaders out of a major potential shite show. I was surprised the FCC didn't show up and make some people super sad.
Anyway, of course, people will do what they want. I'm not the radio police (nor do I have any desire to be) but I do encourage radio users to keep in mind how their radio use affects the hobby, and possibly someone's emergency service rescue.