If it was possible for ordinals and inscriptions to build a layer 2 blockchain that is supported by bitcoin but completely independent on the bitcoin network, this would have been a good thing to do, and sure would easy the constant mempool congestion on the bitcoin network.
Think of public transport and personal car.
You will not make people drop their car unless you tax them for one and you offer them a cheaper reliable alternative.
Why would rune and ordinals go to the second layer when this means losing their main marketing point?
By just offering an alternative and not forcing them somehow this will be always the path not taken, it will only work the other way, making normal users migrate to the l2 since they can't afford the fees. But since to migrate you need to first pay....back to square 1.
Imagine if you try to use your visa card and it won't work because someone is using their network to watch porn. Basically the same imo.
Neah, it's more like in the early days of the internet, someone torrenting in the block of flats was destroying the speed for everyone else.
Things are not like that anymore and everyone can download at 500Mbps, cause....capacity!

I'm sure that high fees on the Bitcoin blockchain network are just a matter of time and will return to normal after some time.
Define
normal!