What you are looking at is the version of the classic game "Monopoly,"but with a 21st century update. it is totally cashless; no more $500 bills to hoard. the money is all electronic. What's wrong with this picture ?
This could be a teachable moment; should not the new game educate the young player about the pitfalls and dangers of cashless business ? At the very least, how about one of those twenty page documents to be accepted, before you can move money, and something about the reality of financial crime would not hurt. Keep it real, Monopoly, please.
And by the way, we're not in Sweden, so expect some player will complain about the lack of cash. Hiding your stash takes place in Monopoly, especially if you want to make an "unexpected" purchase, late in the game, where everyone thought you were broke.