What the article does not seem to mention is that an usual electric wheelchair costs about $65,000 (and is intended to be replaced every six years or so). This and the non-availability of replacement parts is why some wheelchair users started a project to open-source a wheelchair from standard parts:
https://themif.org/
Louis Rossmann interviewed the founder of the project here: https://www.youtube.com/watch?v=eaAj59025Kk