This is somewhat true. I was working at Adobe while building Parcel in my spare time at first, mostly to improve build perf of an app at work. After it launched and we used it internally for a while, Adobe finally started sponsoring the project.

Now, Parcel 2 has a core team of 9 active members from various companies including Adobe, Atlassian, and Eventbrite. We also receive funding on Open Collective which we distribute to a couple independent members of the team who aren’t already sponsored by a company. Definitely a multi-company effort at this point! :)