It all depends on what you are selling, for what price you are selling as well as from where you are selling.
If you are selling digital products that can be shipped without any shipping costs or other limitations, you must sell internationally.
If the products you sell are priced very low or the products are small and the value not high, adding shipping costs can make it too pricy. Then it might be better to sell only locally.
If you have to ship from countries with very limited and expensive shipping options, it might also not be a good idea to ship internationally.
It all depends on what you are selling, for what price you are selling as well as from where you are selling.
If you are selling digital products that can be shipped without any shipping costs or other limitations, you must sell internationally.
If the products you sell are priced very low or the products are small and the value not high, adding shipping costs can make it too pricy. Then it might be better to sell only locally.
