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 ?
I have seen this happened with employees too. Employees working very closely with some clients take away few clients and start on their own. The risk is true in your case too but if you partner with an agency with a clean record and a reputation to upkeep, this won't happen. Just be thorough in running an online background check.
I run a marketing agency myself and can lend a helping hand. Feel free to email at email@example.com to discuss.