I'm curious if there will be a market for this--plenty of current production aircraft can work perfectly well as air taxis, but the service has only caught on in niche markets (island-hopping float planes, some helicopter services, arguably a lot of bush flying). Decreasing the cost by an order of magnitude might go some distance to open the market up--I can't see this succeeding without a drastic advantage in operating costs over traditional aircraft (I think the jury's still out on whether electric propulsion is a significant advantage here, and VTOL requirements are a big disadvantage).
The case for VTOL in particular becomes a lot less convincing when you're primarily looking at the kind of regional travel Lilium mentions here--why not just electrify an existing FW aircraft and operate out of existing infrastructure (https://www.harbourair.com/harbour-air-and-magnix-announce-s...)? Small airports are pretty ubiquitous, and going through an FBO largely eliminates long waits for security and boarding (not to mention alleviating some of the last-mile transportation issues).
I can't stress enough that nothing is simple about VTOL--even if this aircraft lacks complex hydraulic, fuel, and oil systems, any failure in the (electromechanical?) control actuation systems will likely prevent transition to/from hovering flight. It looks like the control surfaces may be designed to have multiple, independent segments (hopefully with redundant actuators) to mitigate these kinds of failures (aside: it's fascinating to see a GA aircraft designed to be dependent on TVC for basic stability and control), but a loss of even one of these segments might not allow a safe power margin for a vertical landing near max gross weight, and it doesn't look like the wheels were designed at all with roll-on landings in mind.
All that said, I wish the engineers working on this thing the best. The current demonstrator is a great-looking machine, and it'd be awesome to see this kind of thing succeed.