From pfsk.com:

“A global microbrand is simply a business, which would be small or unsustainable in a local community or even nationwide, but can be big business when it can reach customers world wide through the internet and serve them efficiently.”

Think about your music career.

It used to be that a music career progressed from unknown, to local/regional success, to major record label promotion/support/sales.

Today, local/regional is the internet – the world – and you can do it yourself.