I was attracted to it because skilled manual labor was practically abandoned by techies. 15 years after I started oDesk there are plenty of startups that are tackling the problem of building global/remote teams around engineers. Nobody is helping the crew that comes to my home to fix my fence or driveway or floor.
I saw a space that is as big as 10% of the workforce of most countries, the skilled, often licensed technicians that work in the home improvement, construction industry - that huge slice of the workforce still remaining abandoned by the techies - by the disruptors. By people that tout wanting to "shape the future of humanity".
You may find it surprising that the answer here is both around remote work and pretty advanced technology that enables a remote architect/civil engineer/drafter to draft/design/spec and a "local" customer to visualize the end result ahead of time and a local crew to follow the instructions/spec and build.