Jim Cockrum (10x smarter and 10x more successful than me) weighs in with his view of 'where the growth is' for e-commerce merchants (like you and me) with his just-released video.
In sum, he says (and I agree):
1. There is still lots of opportunity/growth selling profitably on eBay (although it's going to get a smidge harder/more competitive in the next 5 years).
2. There is still lots of opportunity/growth selling profitably on Amazon (although it's going to get a smidge harder/more competitive in the next 5 years).
3. What's almost always a losing battle and a LOT of work? Trying to sell physical products 'on your own' with your 'own' e-commerce site (instead of on Amazon/eBay). Note that I said selling 'physical' products, not selling 'information'. More on that in the next paragraph.
4. The future is bright and WIDE OPEN to earn acknowledgement as a 'trusted expert' in a niche topic (and get paid for your help). Example: Jim and myself are considered 'Amazon selling experts' by many. There is still PLENTY of room for other 'Amazon selling experts' to jump in (highly successful Andy Dew and Jessica Larrew are two that jumped in roughly 2 years ago, and they're just CRUSHING it by selling their expertise). There are other areas in the Amazon or eBay 'eco-system' that could use experts like you right now.
Note: your expertise could really be almost any niche topic - not just Amazon/eBay. See, consumers and businesses have pain points for a number of things they need solving - not just 'making money.' If you're an expert in something that resonates with an audience, you can capitalize on it, but you have to totally immerse yourself in 'it', whatever 'it' is, and prove yourself as an expert in that niche.
How do you plan to make more money in the near future?