Studies....

It'd be super hard because comparatively study "everything" expensive suits might (and actually do) wear more than cheap but shoes are another matter...so you'd have to get super specific, which makes actual studies nearly impossible.

You'd have to get hyper specific since things change with time and even vary greatly within a category: "Brown Moc Toe Leather boots sold between the years of 2018-2020", even then if they have different sole material you'd get strange results if a cheaper boot used a harder sole.

You have to have a year range because materials and techniques change over time so some items could, in theory, get more durable because of modern materials...on the other side corner cutting to reduce price seems to always rise so newer items might not last the same. You can't just say "boots" because comparing Mac toes, to full cut, too cap toe, could throw things off.