So what?
How could a clone developed by a central bank or commercial bank make Bitcoin for example turn useless just like that? Why would anyone switch to a thing that it's basically the same but it hasn't proven itself, it has a dubious background and an even darker future in wait?
Besides, how could such a solution even exist, imagine an entity that surrenders all control of its currency for what possible reason? What would be for them in this?
There will never be decentralization when a coin is developed by a nation or a company or and administrative body, it makes no sense as it brings no benefits. And people abandoning bitcoin or other true decentralized crypt of for stuff like CBDC makes sense only if you have completely lost faith in human kind.