I have found the exact opposite actually.

Firstly, the reason I open-source most of my libraries is because, when I was a kid and learning to code, I couldn't afford or convince my parents to buy the expensive proprietary software I wanted to play with. Open source let me have access to this technology ( and to inspect how it worked ) without having to buy anything.

This is simple stuff like having GCC to compile C programs, rather than buying the intel or MS compiler.

Those early experiences got me where I am today. I contribute open-source software so that other, more junior developers have the same opportunities I did.

> There is also the idea that contributing will be great for your career development. I have found that not to be the case at all, I think that no potential or current employer has ever given a rat's ass about open source contributions, and do not consider that work as valuable when making hiring decisions. The work you are paid to do is the only thing anyone cares about. I'm not saying that that shouldn't be the case, but just that that is the case.

Again, I've never experienced this. I got my first programming job right out of high school, and my resume was filled only with various (small) open-source contributions. Without those I'm not sure what inspectable experience I would have had.

> Given then, that there's very little upside to doing open source, and most/all the benefits go to profit-making corporations, it is puzzling why do we even push for greater involvement in open source at all? It seems we shouldn't be, we should be warning people who want to contribute to Open Source that they should probably spend their time doing their own studying and personal/skill development which will allow them to succeed in the roles that they have with their current role or a role they'd like to obtain one day, for money.

Again.... the exact opposite experience. I released a moderately popular library, built a community around it, and this has opened up career opportunities for me. In the niche I work in, several interviewers had actually heard of me before I even interviewed. The scalability of open-source to distribute a positive first impression to potential employers should not be understated.

I do agree with you here:

> And the vast majority of the beneficiaries of open source will never support the project even when they are fortune 50 companies saving millions of dollars by using the work of one volunteer.

Lastly, I think the reason most people find open-source to not live up to its promises is that they do not take on leadership roles in open source organizations. Frankly, as a more senior developer now, simply being a casual contributor to a project would not add to my resume. However, being a project lead, or component lead, would. You need to target your open-source contributions to things your employers would find useful. For example, I work on mainly backend, low-level things in my current career. As much as I would like to contribute to GNOME or GTK or whatever (and I have the skills to do it), there is not enough reward to doing so, so I don't. Instead I contribute to projects that I know will ingratiate myself to future employers. Perhaps that's why our experiences are so different.