Brother, the ones on main commercial are expesnive and too croded with lots of dealership on ground portions. They suit best for front facing, customer intercating businesses like Banks, Dealers, Travel Agents etc.
The ones, lets say in Business Square are more economical and far better value for money. I think if a business like you mentioned (IT company etc.) dont have much commercial activity, an apartment can be used.
However, here is the thing. Apartment costs more to be built, i.e., kitchen fitting, more fancy tiling and seperations. Offices and shops require less material compared to apartment but shops and offices are sometimes 4x the price of apartment.
Developer who provide services (security, cleaning etc.) would never want apartment bought at 1/4 price of commercial to be used as commercial, it will devalue their commercials. Many owners dont mind that, once project sold, so it depends frlom developer to developer. As far as quiet business with not much movements should be Ok,
Also it depends, some families in residential apartments might argue on people/teenagers going in and out of apartment next to them frequently (like a usual SME setup)