I am not comparing the situations but I find ludicrous the suggestion that a lack of availability is G-d’s way of telling us to drop something.
Sometimes it is. A lack of an esrog (such as that the price exceeds 20%* of your net worth) is God’s way of telling you not to take an esrog. And that’s for an actual honest-to-goodness d’oraissah!
The standard for a d’rabbanan (and certainly for a chumra) should not nearly be so high.
The Wolf
* I believe the number is 20%, but if not, feel free to substitute whatever the number is.