UX and Accessibility in FOSS is often quite lacking. There are a lot of things I think can be done to make interfaces for wallets, nodes, and hardware easier to use for the average person. Lots of low hanging fruit out there. I think what the Bitcoin Design Guide team is doing will go a long way to bridging some of those gaps, but it is also good to see increased lightning bounties some even for accessibility (in the sense of user centered design for people with disabilities). It is my hope to start working on some of these projects to help make them more accessible and useable to the average person regardless of technical proficiency or ability. I think a lot of the hard problems around security, key storage, and bandwidth issues have been at the forefront out of necessity, but as these problems are solved and new applications are built on top of bitcoin, the adoption will increase tremendously in step with increased usability. The incentives are built within the sound money nature of bitcoin itself. This drives people to want to work for bitcoin just as much as people want to get paid in bitcoin. I also believe bitcoin bounties that solve these problems will become more and prevalent as time goes on.