FBA is just a "method" you can use to store products on Amazon and have them handle all shipping. The art of making money on amazon fba is based on a simple process – you make more than you spend. This applies to businesses as well as "private" areas.
You can sell your product and ship it from your home/office through a professional feature of amazon seller software. You can still do this without sending the package to Amazon to be delivered on your behalf.
The most important thing I would recommend is that FBA is primarily focused on how the product owner can delegate all packaging/shipping of Amazon products so they can focus on investing / upgrading.
One of the biggest problems small business owners face is what's known as a "barrier to entry" – how much money it takes to seize opportunities. For example, to create effective software, you typically need at least 10 years of experience to develop specialized experience.
Also, you need market demand and the ability to provide a valuable product regardless of the different market conditions at that time.
Amazon – and retail in general – don’t need all of this. All you need is a product that meets market demand and allows consumers to find and buy it as needed.
While you can do this with your own e-commerce business, the weight and confidence of the Amazon brand are much more important in providing an effective way to attract real buyers.