As the internet grows and expands, not only is SEO going to get more competitive, but it's also going to grow more lucrative. You could quite easily capitalize on this industry if you know what you're doing. This doesn't just go for doing work for clients, but also for yourself. You could launch any number of online businesses, niche websites, and blogs with the right amount of SEO skills.
Fast growth usually ends badly for most businesses. Fast growth may not be manageable without the right people. Build for the future. Target small areas where you can avoid big encounters that are able to take you out of business in just a few minutes. Remember to research those ideas, make sure that the idea is feasible, and try to find a niche product with low competition and high demand, preferable something you are already familiar with. Then start implementing the idea by starting small and continue with slow and stable growth. Long term earnings are always greater than short term earnings.
Drop shipping is fairly similar to running an affiliate store. You act as the mediator without ever touching the product. The difference between a drop shipper and affiliate is that the sale with drop shipping websites is not completely managed. You might have to set up systems to automatically make a purchase with your drop shipping company, in order for it to be sent directly to the end consumer.