Marketplaces are good because a lot of times, users want someone to just do it for them rather than teaching themselves with docs, tutorials, and forums. There's always a time tradeoff and sometimes it's worth it to just pay someone. This is why there are https://experts.mailchimp.com, https://www.google.com/partners, etc. We make adding this layer service more accessible to SaaS companies–and it's a 10x better service for the end user because of our technology.

'Expert' is our term for the freelancer. They're an expert of the software itself. So a Google AdWords expert, or a Mailchimp Expert.