Gareth, this right here is why you can't find a partner. You give up and "accept your lot" before you ever even started. You have a profoundly Eeyore mentality.
It's a bullshit statement. The writing profession has many tables beyond the world of traditional publishing and there will always be more.
How can you not see this, given that you are sitting at another of those tables. The blogging table.
You accept the label of mediocre too readily as well.