How can you not know this?...That too on 17th of April.
All the universities are closed and the classes are all online.
Will Ginza struggle?
There is no reason to think it will. And "struggle" with what? supply?
While some of the girls are still/flown overseas, whole lot of them have already come back through 14-day isolation in Thailand and other countries. They will be ready to work after the lock down is over.
I don't know what you mean by "They will be ready to go home to their motherland".
If they haven't had steady income flow for several weeks and months, why would they go back to their country?...They will try and make up for all the lost time.