Except something as simple as increasing the block size to allow Bitcoin to process more than 7 transactions a second (Visa handles 42,000 tx/s comparatively). Theoretically it is possible, but the way Bitcoin is designed puts changes in control of people who stand to profit from preventing certain changes (i.e. Tragedy of the commons) like block size increases - and they are blocking it. The point is that Bitcoin isn't some piece of software that you can magically push any necessary changes to.
So is that a "yes, it's possible" or "no, it's impossible"? "Theoretically it's possible" sounds like it's possible. Saying "here are some examples of things that didn't happen" doesn't prove that they, or anything else, can't happen.
It's as possible as a number of rational actors collectively acting irrational. It's economics, not technology - so it's theoretically not impossible, just very highly improbable.
Yes it is possible and it is already done on Bitcoin SV (original bitcoin). Recently 128 MB block were mined as a proof that bitcoin can scale to hundreds of thousands of transactions per second
if the commons actually wanted larger blocks there was an opportunity with the bitcoin cash hardfork, but that chain has less value and less hashrate now. So when given the opportunity people didn't move to the chain with more transaction space, so it seems the votes are in.
Except something as simple as increasing the block size to allow Bitcoin to process more than 7 transactions a second (Visa handles 42,000 tx/s comparatively). Theoretically it is possible, but the way Bitcoin is designed puts changes in control of people who stand to profit from preventing certain changes (i.e. Tragedy of the commons) like block size increases - and they are blocking it. The point is that Bitcoin isn't some piece of software that you can magically push any necessary changes to.