The problem is funding. To be a real github competitor you need some serious infrastructure investment, which means you need to generate revenue and you start doing all sorts of stuff that is hostile to your free-tier userbase.

Personally I wouldn't mind paying for access but I doubt there is a critical mass of users that can be weaned off of free access. Competing with free networks is hard. Codeberg, as far as I can tell, basically has a donation model where you can volunteer to pay and be a "member", but 0.5% of users choose that option, that is, they made a one time payment of 10 euros. That's enough to fund how many months of bandwidth and a couple of recycled servers. For cloud infrastructure standards are pretty high, you want replication, backup, anti-DDOS, monitoring, etc. All of that costs money. It would also help if they made it easier to donate with a paypal link instead of a SEPA QR code that requires an international bank transfer.