How do you define ‘corporate’ ownership? If you can own 100 properties as an individual, does that count as ‘corporate’? If it doesn’t, that seems like an easy loophole. If the intent is to ban large quantities of homes owned by single entities, then doing it by quantity sounds more sensible.
That might redistribute old homes, but it doesn’t necessarily solve the drip feeding of new homes that we have going on right now. For example, the UK used to build 250k+ houses every year during the 1950-1980s period. 50% of that was government built council houses for those in need. It’s estimated that we need to build 250k more homes than we currently do in the UK, and the private housing industry has not done its part.