The reality clearly demonstrates that investors don't bother investing in coops. You've obviously never actually tried to get investors to invest in a coop.
If you ever try starting a coop you'll find out how hard it is to get investment in practice. It's kind of hilarious that you think nobody thought of these obvious things to try before you.
The reality is that it's much more difficult to get the initial funding for a coop than a traditional company, and it's not that lots of people haven't been trying different approaches including the hare brained schemes you floated many times. The fact that you just keep repeating something that's demonstrably false means that there's no point continuing this discussion. Have a good day.
We simply talk about different things. Initial funding comes with different risks.
I think established cooperatives should issue bonds for expansion.
New cooperatives cannot issue bonds because nobody can judge the risk. They have to do a startup and sell shares in a company that owns the assets. But why should the founders limit themselves and do the opposite of Zuckerberg and give their influence away by just owning one vote in the participating cooperative?