I'm not sure a comparison to banking is appropriate though; much of what banks do (loans, etc.) is not obsoleted by cryptocurrencies.
You could do the same with dollars.
Sure you can look at it that way, or see how Linux dominated the Mobile and Sever space which then bypassed the need for desktops entirely, so too has Bitcoin done to finance and you can now easily plug into the Global economy with nothing more than a 10 year old smart phone.
Honestly, you guys make my arguments for me so well that I think you have to be trolling (as closet Bitcoin holders) being bored at your otherwise mundane jobs.
Buy the way, been there done that, it loses it's novelty fast. And you're better off learning a new skill.
If "another layer" means lightning network, I doubt it.