Earlier quoted context omitted.
Lots of countries have no reserve requirement. It actually doesn’t change much, just the asset mix banks hold. How much a bank can lend is basically entirely determined by the amount of paid-up capital, not reserves anyway. The maximum ratios are fairly strictly regulated (e.g. Basel rules).
newb question what is paid up capital?
It's a combination of capital paid from shareholders holding fully paid shares (i.e. shares that were paid in full when issued - for example, when shareholders buy new shares in capital raising rounds) and retained earnings.