This certainly depends on what kind of effort is to be made. If a large industry certainly requires a large capital too. If it is not too small to need a big capital. In addition, it is also depending on how to run it. business with small capital if an intense will also be big and make a lot of profit.
Yes it is enough, as a matter of fact Im starting to open a small business. My saving in doing bitcoin is enough to put up a small store. But the problem is the past few months I've waste almost 3/4 of it and went for nothing. So im planning to start over again to have a capital for the opening of my small business.