We should be members of a professional institution. In any other profession, it would set such standards, or at least somewhat govern the academic contribution to them.
I am a member of the IET, but it's not strong on CS/SE. Some might be of the BCS (aka Chartered Institute for IT, which says it all IMO) or ACM. The latter is probably the most relevant we have, but it's more publication focussed than professional development/regulation/whistleblowing support/standards providing etc. of traditional bodies.
> most of the internet runs on software not created by a big company
I think you underestimate the amount of sponsorship that carries open-source developers. For example, have a look at the "Most active 6.3 employers" section for contributions to the 6.3 kernel, which amount to over 75% of the lines changed.
