What actually decides whether this works
It is almost never the industry. We have run campaigns in categories that look nothing alike and watched them behave identically, because outbound turns on three things and none of them is what you sell.
One: your buyer has to be identifiable from the outside, by role, company type, location or something equally concrete. Two: a new client has to be worth enough that researching accounts one at a time makes financial sense — thousands, not hundreds. Three: you need somewhere to put the work when it lands.
Get those three and the category is close to irrelevant. Miss one and no amount of good outreach fixes it, which is why we ask about all three on the first call rather than after the contract.