What price do you define a micro-cap at nowadays? I have one share that is just under 8c (I paid a lot more for it unfortunately). Is that a micro-cap now?
It's not price that matters for micro/mid/large cap. The cap is short for capitalisation, so a micro-cap is a company with a relatively small market capitalisation.
If CBA had 6500x as many shares on issue and was trading at 1c per share, it wouldn't be a micro-cap it would just have a lower individual share price.