If you use approximately the same amount of material as in an aluminum can, you’re already at 3x the weight of an aluminum can. Stainless is also far less malleable and much more brittle than aluminum, so the minimum wall thickness is much higher for steel. Aluminum can walls are 0.11m thick, whereas the minimum wall thickness for stainless steel alloys is around 0.50mm thick. Meaning you’d need around 4.5 times as much material, making the stainless steel can weigh at least 10 times as much as the average 15 gram aluminum can. A 12-pack of soda would weigh 4.5 pounds more. Now imagine how much transporting that extra weight costs.
Stainless steel is great for reusable stuff, but it’d be impractical at the same scale as aluminum cans.
The collective confusion and mental gymnastics to twist it when Republicans heard about the Hunter Biden conviction cost the US billions in lost productivity.