The logic of recommending the mass market companies is just that. They have shops all over the country because of the clients whom they serve. These are good companies to learn with because it is anticipated that as you do your first shops and get the hang of shopping, you are likely to make mistakes and some may even be egregious that they get you terminated. The mass market companies also have the characteristic that while they pay low, they do pay more promptly than many and they are reliable in their payments.
That being said, there are some companies and situations where a brand new shopper can snag a well paying job. These tend to be focused on much more narrow markets. Unless you are in my backyard or Walesmaven's you likely would not see the same offers even if we were new-to-the-company as well.
Another aspect of this is that no responsible company is going to assign to an unknown shopper a job with a significant non-refundable out of pocket expense. It would be great to go do that upscale steakhouse with a $150 reimbursement!! If the shopper screws up and the shop must be rejected, the shopper will not be reimbursed the $150. In this day and age of forums and social media it would take about 30 seconds for that shopper to be announcing to the world that they were scammed. Far better for the company to see a pattern of thorough and client acceptable work before assigning them such a shop, both for shopper protection and for company protection.
There is a no-out-of-pocket company I have seen expanding their reach for more shoppers in more locations. Yes, they will pay mileage and yes there are frequent bonuses and yes the shop pay is good and yes the visit part of the shop is pretty quick and easy. The report expectations far exceed those of similar shops in the industry for detail and they provide examples for the shopper to understand that. But you will also note from the announcement detail that there are a number of things that MUST occur or you will not be paid--not fee, not bonus, not mileage, not a consolation fee. It does not matter whether the omission was beyond shopper control, if it did not happen you get $0. I have gotten caught on a couple of these where there was not a darn thing I could do about it, but I continue doing them because the pay from the other shops adequately compensates me for the reports lost.