Because there is a switching cost, right, the duration could be 10 years or even 20 years.
因为我们需要 10 到 20 年去完成这个转换。
科技 Crash Course
This is what economists would call a switching barrier or switching cost.
这就是经济学家所说的转换障碍或转换成本。
英语百科
Switching barriers
（重定向自Switching costs）
Switching barriers or switching costs are terms used in microeconomics, strategic management, and marketing to describe any impediment to a customer's changing of suppliers.