My mom for other hand need to delete content every single week(and she don't use apps, only fotos) , 16GB in a 500+ dollar product is not business, is atrocious.
I agree...16gb is a paltry level of storage. However, this complaint is so worn and, honestly, irrelevant. 16gb is the minimum, and is a choice people can avoid. If you are not comfortable with only 16gb, there are 2 additional options.
Go to any car manufacturer's site and build any car. Every single one of them will show a starting MSRP, which is generally a really appealing price. "Wow, I did not know I could get a _____ for that little...I thought that they were so much more expensive!"
Then build it. Add that awesome color you really want (+$1,000). Add navigation (+$1,700). Add leather seating (+$1,200). Add the moonroof (+$1,000). Oh, and don't forget the 19" wheel/tire package (+$2,000). All of a sudden, that car is thousands upon thousands more than the starting MSRP.
You will have that same experience with virtually any purchase. New laptop, AV receiver, bicycle, whatever. Companies nearly always have multiple options, the lowest cost offering the lowest specifications. Quite simple.