alt Hacker NewsSounds like you like pretty close to or in an urban/metro area.
Food deserts still exist all over the US. And likely in Canada, too - you're less likely to have the same options in Toronto, Vancouver or Montreal as opposed to say, Nunavut or Yukon.
The issue here is that you specified in-season. The problem with food at scale is that humans are impatient, and want what they want regardless of season. We don't have seasonality in this day and age in the US outside of small things like pumpkins or gourds. Fruits are expected to be available year round.
Your food standards are WAY higher than ours (I say this jealously). Your government gives a fuck about its population. Ours does not.
You can get these things year-round here in Toronto, of course, they just tend to go on sale at specific times of year for reasons of supply and demand. But that's specific things like the root vegetables; things imported from the tropics have much more stable prices of course. And really, I'm happy to prep and freeze stuff, and to choose different produce seasonally.
The concept of a "food desert" is wild to me. I routinely walk 3km each way to get groceries and think nothing of it. One of the best ways to make sure I get exercise.
Do American Wal-Mart locations in small towns charge higher prices than ones in major cities in the same state? I think that might actually be illegal here. Certainly the grocery store flyers are for at least the entire province.