The key word is benefit - relatively easy to "sell" products (just sell smartphones or maybe technology options), but your profit margins are going to be hideous.
What a lot of people don't realize would be that the funds you "collect" from company is merely part of the story.
"Full" list purchases provide a gross income. To figure out the benefit, you need to discount COGS (Cost of Goods Sold) and any additional "administrative" expenditures, like advertising, warehousing and staffing costs.
Whilst the allure of the "digital" realm has encouraged millions to foray into the depths of its, it is not different. You nonetheless have to account for profit (bottom line) instead of overall disgusting (top line) in order to keep the sanity of yours (& viability).
The "online" business community closely mirrors the offline counterpart of its, meaning in case you're seeking to make use of the plethora of opportunities made up of the likes of Amazon, YouTube, etc - you will wish to check out the way they work... as "markets".
YouTube is a market place for entertainment, Twitter how much is the wholesale formula (visit the next website page) a market for attention as well as Amazon is a market for commodity prices. Understanding this sets you in the advantageous place of getting to determine a far more effective way to offer answers to participants in said markets.
Supply/Demand...
The most essential thing to recognize that it is all about source & demand - the foundation of a "free market".