Absolutely incorrect, it seems that you do not have experience in the field.
1 - most banks won't deal with you if you don't have a country of residence and a tax ID.
2 - if you open bank accounts and after you change your residence to nowhere, at the first bump be prepared to have your assets frozen until you provide the documents they want and you do not have.
3 - an option would be, make the accounts with your current residence, then, change it, and tell the bank about your new residence and new tax ID, but many services will then just close your account (if the service is only for EU residents and you are living in
Malaysia for ex)
You need to decide where you will be a resident and have all your accounts tied to this residence/tax ID. If you are from
Finland(for ex) and your address on the bank is in Finland and all of the sudden you are receiving substantial funds in it, it is a risk. That is especially the case if you are not a tax resident anywhere.
Forget about being a
perpetual traveler without a residence anywhere if you want to have peace of mind and active accounts.