I'm not at all an Alpa specialist, but the problem is the same for all pancake cameras. For product photography you need a large focus range, from a few cm to several meters. How close do you come with a focussing ring? Some manufacturers have short- and long barrel lenses, others have spacers/extensions tubes to get closer.
Tilt is another issue, it really depends on the kind of product photography you're doing.
Maybe a bellow camera is a better choice for product photography. Even smaller, digital optimised view cameras should be quite cheaper on the used market.
Tom-