There could be something in that given the energy required to acquire the materials be that raw or recovered and the need to keep costs down and profits up but I would think it's more to do with weight and with that, transportation weight as a few grammes lost per can multiplied by a lot of cans makes for less fuel required to shift that weight in what is a situation where prices for everything except wages are rising.
That said there is another more cynical part of my mind that begs for attention and yeah i'll hear it, the part that reminds me of my experience of metal cans failing well before the best before date telling me of a cynical business ploy inherent in the weak packaging.
Would commerce be that cunning, dunno, maybe, whatever, then mitigate, don't give them what they may want - of which of course goes on to steel oneself to do better: select the best cans, store them the best conditions and keep an eyeball on them so the contents going awol are caught before they stink the place out/contaminate or just aren't there when you have need of them.
Hard to think of canned food still being found edible from the 1907 Shackleton Expedition to the Antarctic, but for sure the conditions of storage will have a lot to do with that, and doubtless potentially better packaging.