Maybe not however it's his competitors who charge for what he offers for free from where he derives his income without all their overheads:-)
They must be seething that a major competitor provides them with leads, it would be interesting to know their conversion ratios.
Like many others here Markus has done this by himself, with some help from his girlfriend along the way, the main difference being that Markus has managed to do it in a much bigger way than many believed possible for a one-man operation.
He targeted a huge, well-known market and found alternative solutions to the accepted norm and the same method could be used for many other subjects.
I bet his head buzzed at times trying to resolve many of the undoubted problems!