This will always be around. People have been doing this since time started. Its called being a middleman.
I would say you can still make money selling other people's services. I would see that being affiliate marketing. This is something that has been around forever and will probably continue to stay around. There are numerous affiliate marketing networks you can join. The amount of money that you make is going to depend on how well your marketing skills are though. Also, having good writing skills is a plus too.
Here's what i do I advertise to my list various services I find on Fiverr that i think they may need. I sell these services for around $10 and pay Fiverr the $5 to do it for me. You don't make big money but it trickles in, is easy to do and it adds up
Reselling servers, hosting and domains can make you nice amount of money, if you know how to do a good advertising and provide good support to end-users.
Affiliate programs can be quite lucrative. You need to stay active and focused. As owner of PrivacyAbroad.com I see first hand how a solid affiliate program can be a great source for residual income. It's a win-win for all.
There are so many local and small businesses out there that feel the internet is too far of a big jump, with the help of Odesk and Freelancer I find that targeting this market can be hugely rewarding. these businesses are still used using local services which is a great way to profit.