I've dug a bit into what he claims his business name DSP enterprises is. There is an LLC registered in Seattle called DSP enterprises. However the owner (governor) of that company is not Phil. Now, this could mean that Phil has registered DSP enterprises as a sole proprietorship (which are VERY difficult to track down because they're not required to register at a state level, only at a federal level for their tax ID)
Now, what does this mean, does this mean that Phil is using a shell company? Not necessarily. With sole proprietorships they can name themselves whatever they want within reason. You cannot name yourself a trademarked name, but as far as I've found, DSP Enterprises is not a trademarked name like Apple or Starbucks.
However using the DSP Enterprises business name, the LLC could challenge Phil's usage of the name as they're both in the same geographical area. The DSP Enterprises could challenge Phil, however since they seem to not do business in the same genre. Phil being entertainment and the LLC seeming to be something to do with timeshares in California.
Considering Phil does seem to do his taxes as a self employed individual doing the quarterly estimated taxes, the sole proprietorship doing business as DSP Enterprises does seem to make sense. These sole proprietorships can obtain credit in the business' name, they have their own tax ID number, but unlike an LLC they dont have the protection of their assets should the business fail or should the business be sued. In a sole proprietorship, the individual and the company are one individual. For more information on sole proprietorships
https://definitions.uslegal.com/s/sole-proprietorship/
