Those have existed for quite a while now. For smaller projects it is cheaper to get a human.
Even on individual small building sites in France I'm now seeing mini-diggers instead of human shoveling, everywhere, or tile elevators (for a 3 man roofing team!) instead of the stereotypical exploited immigrant manual labourer. These are justified by insurers quoting such a high price for covering the expected accident and long term health costs of human shoveling or tile carrying to roofs that buying the machines is cheaper.
If a roofing company can complete three jobs in a month compared to one job without a goods lift then renting one for each job makes economic sense, especially if it's physically easier too.