Banks and/or governments can not create a decentralized currency, they can only create a state currency and there is a big difference.
Since they can only create a stablecoin, I can't imagine people speculating on it more than with traditional currencies.
So if you expect to see people buying state coins and wait to see the price pumping. Nope it won't happen
They didn't start to work on this digital euro to compete with cryptocurrencies. They perfectly know the difference between a digital coin and crypto and know very well that people interested in cryptocurrencies is just a speculation matter. This won't be the case with a digital euro coin.
They did it as an innovation in digital payments means and to avoid being dependent on certain networks. By networks, I mean some companies like Visa and Mastercard
Banks only create cryptocurrency for everyone to use, and it will be their closed system. The source code specification is certainly closed, modified by the bank. Decentralization does not happen in these currencies. It will be just like the USDT we know, representing 1 $.
I don't worry much about this currency as everyone will have their right choice.