The important parts of your business cannot, in fact, be "copied in days". Things like trust, based on demonstrated reliability over time, human relationships based on being a decent human being and treating your customers with respect, your willingness to bend over backwards to accomodate special requests from customers, your ability to embed yourself into your customers' environment and build a genuinely deep understanding of their problems and challenges... etc., etc.

Copying technology is easy. But "business ≠ technology".