knock yourself out

I mean, just don’t click anything in a phishing e-mail

it removes my exclusivity of ownership over my own code.

Your statement is false. It does not remove or diminish your exclusivity of ownership over your own code. That’s just not how copyright works. I don’t know how else to put it.

I’d gladly pay them a smaller fee

If I ever wrote code you wanted to use in a game you wanted to sell, and you reached out to me, I’d just let you use the code under a different license for free. My main concern is that corporations would freeload off my work. Some people wouldn’t even do it for any fee. I think that’s silly, but they get to set the terms of how we use their code.

selling copies of my software is largely how I make money

That’s great! You are part of a tiny group of people who manage to make money this way, and that’s no small accomplishment. More power to you, and I wish you more success. If you feel comfortable revealing it here, what game(s) do you sell?

removes my exclusivity of ownership

Again, using GPL’d code does not remove your ownership of the code you wrote. Using other people’s code in general does remove your exclusivity of ownership, regardless of license, since the code other people wrote belongs to them.

Essentially GPL removes a large way to gain money.

1. What you are saying is you should be entitled to make money off of someone else’s work. If you want to make money on something, you may be required to do the work yourself.
2. Individuals writing software and selling licenses for is not, in the grand scheme of things, a “large way” to get money. The vast majority of money made from writing software is programmers being paid to write software for someone else who will own the license. Software written under “permissive” licenses is by and large used to create wealth for the owning class, not individual programmers.

Yes, you don’t own the thing you didn’t make.

None of these licenses give patent protection to your users. If you’re going “permissive”, you should use Apache.

Then I need to include a snippet of GPL’ed code for any reason

A snippet? Surely you don’t need to include a snippet of someone else’s labor.

all that work now no longer belongs to me

It does belong to you. You still own the copyright of the work. You can still license it however you want, you just also need to make it available under the GPL.