Yes, sometimes one specific feature can make or break a product - even if it is seldom used by a minority of it's users. For example some use cases for Acrobat

Yes, sometimes one specific feature can make or break a product - even if it is seldom used by a minority of it's users. For example some use cases for Acrobat / PDF rely on scripting ability (JS), but the vast majority of PDFs come without embedded scripts.