You started by pretending you knew what this guy should do. It has taken several postings of you talking to yourself to finally admit that you don't know what you're talking about.
The FCC regulations and process for commercial testing and certification of a device is documented online. It has nothing to do with an FCC
amateur operator's license. The first thing to understand is that a HAM license is issued to operate a transmitter within limited bands for
non-commercial use. FCC type-testing, certification, and issuance of an FCC ID, is required for a company to
test, market, and sell a commercial device. Depending on the type of device and the band&power it operates within, the owner/operator of the device may or may not need a license. It can be license-free (Wifi, cellphone, garage door opener, for example), or an amateur license (ham band HT, for example), or a commercial operators license (TV/radio station, company's mobile fleet radios, etc).
Understand also the FCC typically doesn't police the airwaves. Any action from the FCC usually begins with a complaint from the public or a commercial operator or the military. They gather information, and the legal department decides if it's worth a warning, a fine, or a docket to be turned over to a US attorney's office. I've been on both sides of this process. ;-)
There's a fine line in the regulations when it comes to reselling a transmitting device as part of an integrated system. If the original device is a module intended for multiple applications, you only need to show that it still works within the limitation for that band once it's integrated into your product. But, if it's a transmitting device intended for (and certification tested, type-tested for) a specific application, you can't just integrate it into your product for a new application. The FCC will usually require new type-testing ($5K to $20K, performed by an independent testing company). Many products are in violation, but again the FCC is not typically a policing organization.
An individual or small company may decide to "wing it". All is well until there is a complaint from interference, or worse, someone is injured using the product. When the lawyers find you were in violation of Federal regulations, they will use it as an example of incompetence. It might not have anything to do with why the incident occurred, but you will lose everything you own trying to prove otherwise.
If you need more information than that, contact me and we'll discuss by consulting rate.