While this informercial below cracked me up...
...I can't deny that I hate pulling the bags out of the large garbage can I keep in my studio. To conserve bags, I wait until they're fully laden, and the suction effect seems to add 20 pounds to the already-heavy load.
I probably wouldn't buy the "Can-Air" solution, partly because I hate the commercial, and partly because I assume one could easily build whatever their device is made out of. (Notice they're careful not to mention what it actually is, which makes me think it's a rebranded piece of something you find in a hardware store.) Meanwhile, a common hack is to drill holes in the bottom of your garbage can for airflow, but since people in the studio are fond of throwing full cups of coffee and sharp, broken plastic hangers in there, I'll forgo that solution too.
There's got to be a better way!
I poked around a bit to see what company has addressed garbage bag suction with design. Rubbermaid's Brute brand seems to top the list with their ribbed, sexily-named 2643-60 44-Gallon Utility Container:
While referring to simple vertical molded ribs as a "venting channel" sounds like MarketingSpeak, you can't deny that that's what they are. As for the additional design points, the little grip at the bottom would come in handy for when I have to up-end the can to dump liquid spills into the studio toilet, and I dig the idea of the little plastic tabs meant to cinch the liners on, though I have a feeling I'd eventually break those off.
Anyways, I know most consumers aren't clamoring for garbage can re-designs because they probably don't think about them very much. But I like that there are designers out there considering features like this, because sometimes it's the little unaddressed things that make an actual, material impact on how we interact with everyday things.