Lilium is one of the companies that aimed for the "air taxi" market and touted any space or roof. They've since both increased the size of their planes a bit an

Lilium is one of the companies that aimed for the "air taxi" market and touted any space or roof. They've since both increased the size of their planes a bit and dropped the idea in favour of flying between dedicated sites and backed away from the "air taxi" vision towards flying between small regional sites. I think the issue being that even if you get to the noise level needed, convincing regulators about the safety will take a long time. I think there will be market, and it might also very well make expansion of existing airports less controversial if it is for less noisy tiny electric VTOL planes, but I think at best in the short to medium term they'll also be able to fly to helipads. Getting additional locations approved will probably happen, but I suspect it will be a very slow, arduous process at first, which will only accelerate once people have both spent significant time near a landing site and not felt inconvenienced enough to oppose one elsewhere and flown in these planes and felt them convenient enough to want them nearby.