That's easy to say. I can deliver the product, but I'm worried about sales taxes, VAT, compliance with laws, administration, support, etc.
Marketing/Selling, and building the right thing ... this is the hard part.
If you can do the later, most of the ops becomes ... just ops. It's just work. It can be done.
If you need to hire people, open an office, write up contracts, deal with immigration lawyers, deal with tricky shareholder stuff, manage customer accounts ... then maybe you need someone to help.