When Satoshi Nakamoto first proposed Bitcoin, the first public criticism it received was around its scalability potential. Fast forward to 2021, and according to many supporters and doubters, scalability is still Bitcoin's biggest problem.
However, with the rise of institutional interest and technology, a solution to the above-mentioned problems was proposed, called the Lightning Network.
The Lightning Network solves the scalability of Bitcoin as a secure off-chain settlement. Why not fix Bitcoin directly?
Any changes in the functionality of bitcoin are now very difficult to implement in practice, even if the need for such changes is obvious. Bitcoin does not have its own cohesive team, as, for example, in ethereum. It is very difficult for his disparate groups to come to a consensus. This makes it very difficult to update. There have been many attempts to increase the scalability of bitcoin. However, this has not led to anything yet.