I do not understand the usefulness of the blockchain techologies for a regular company or office. Any ideas?
I think that blockchain techologies are worthless for an ordinary company until operations in it are legally confirmed by a goverment.
A company is part of the global ecosystem. Not all companies create their own credit card but they use credit cards. Companies use products they don't develop and are customers of companies that do use these technologies.
Now tell me. Is being able to prove that you paid a bill or did "x" on a particular day important to companies?
In case you're not sure the answer is "Yes, it's important."+