>> A backpacker will be backpacking in the country for 10 days. Rather than having the hassle/cost bringing over a tent/sleeping bag they would like to rent them

Maybe some but I suspect many climbers/hikers put a great deal of faith in their equipment. Rental equipment is often abused. Beyond that, they aren't comfortable with it which adds an element of risk.

>> A business person visiting Dublin for three nights. This person would like an ipad for this time.

A business person traveling internationally will have all the tech they need and then some.