I’ve been a few Instagram brands and have been approached my companies. I’m great at selling my skills but given the amount of leads I only want to manage the work. My concern is while outsourcing overseas is a regular practice to expand outstretched resources for an agency, how do I know these agencies won’t swoop in to take my clients ?
If you are adding value to the client in terms of understanding the client’s requirement and managing the team, it is unlikely the client will have an incentive to work directly with your vendor. Most customers wouldn't want to work with offshore vendors unless the projects are big. You will have the same issue with domestic employees and freelancers also. I had ex-employees tried to poach customers in the past. Most customers contacted me to warn me about them rather than try to save a few dollars.
You have to do the due diligence with the vendors as you would with any partner. Most vendors are honest and straight forward. If you ware working with an established vendor, chances in your favor. If your vendor tries to poach your clients, there may not be any legal recourse even if you have non compete in place unless you can sue in Ukrane, India etc. Alternative would be to find a offshore vendor with US presence. In that case you would be covered under US laws instead of foreign laws.