I talked with a barista that had worked 10 years at Starbucks and he still made minimum wage after all that time, it was specially worrying since minimum wage in this country it's equivalent to 420 usd a month.

If they worked for a decade and never got a pay rise (other than minimum wage increases), why are they still working there? In an ideal world, you get wage and career progression over time, or move on to a different career otherwise.