Crown
¯\_(ツ)_/¯
what they've basically done is block you from working with the competition.
That's exactly how I see it too. They basically want to get some exposure on YT but have no skills to do it. So they want OP to do it for them but to only promote their products. The viewers will hate it because the content will be like watching 5 minute ads and all comments and questions about competing products will be censored. Honestly the channel would be like watching a shopping channel (but only plugging one brand).
OP's personal channel would also suffer (and not benefit) because he would be accused of "selling out" and of no longer being a credible source of independent advice.
When corporate suits start trying to use social media but using corporate methods, it nearly always ends up with cringeworthy results.
Allow me to explain clearer, so I will be fully employed by them
The moment that contract is signed, you become their employee having to report to them. The best thing about doing YT fulltime is the freedom and you wouldn't have any of that.
Think about why they have contacted you. They have obviously seen a lot of potential. They need you more than you need them. Don't let their corporate clout impress you. It's worth next to nothing on YouTube without all the other necessary skills (that they don't have) to grow a channel. Good luck.
