The main key word is benefit - somewhat easy to "sell" products (just offer smartphones or maybe technology options), but the profit margins of yours will be hideous.

What many people don't understand is the wholesale formula fact that the money you "collect" from business is simply part of the story.

"Full" retail purchases supply a gross income. To determine the benefit, you have to discount COGS (Cost of Goods Sold) and any additional "administrative" expenditures, including advertising, warehousing & staffing costs.

Whilst the allure of the "digital" realm has caused millions to foray into its depths, it's not unique. You still need to account for profit (bottom line) instead of overall disgusting (top line) to keep the sanity of yours (& viability).

The "online" business community closely reflects the offline counterpart of its, meaning if you are looking to make the most of the plethora of opportunities created with the likes of Amazon, YouTube, etc - you will want to look at the way they work... as "markets".

YouTube is a market place for entertainment, Twitter is a market for attention and Amazon is a market for commodity prices. Understanding this places you in the advantageous position of being able to establish a more effective way to provide solutions to participants in said areas.

Supply/Demand...

The most essential thing to recognize it's all about demand and source - the cornerstone of a "free market".