He finds that readers tend not to think about the years of marketing and building social media profiles and paying for site hosting that get a blogger to the point where they might be paid to visit somewhere.

that 是关系代词，引导定语从句。先行词是复数的 the years（中心词），应该把定语 of marketing and building social media profiles and paying for site hosting 包括在内，语义更完整。

划线部分是定语从句，本身又包含一个由 where 引导的定语从句 where they might be paid to visit somewhere，其先行词是 the point（地点，网站）。

【翻译】他发现，读者往往不会去思考那些年的营销、建立社交媒体档案和支付网站托管费用的经历，这些有可能会让博主付费去某个网站访问。