If only things were that simple lol. Opportunities come and go and even if they presented themselves to you on a silver platter, at times your current situation would prevent it from grabbing it. Not to mention that business itself is a competition. Same scenario but this time you can grab it, more often than not something bigger would simply overwhelm you into giving up the opportunity.

If you're going into business, go into somewhere uncontested. If there's none, then make one. Would probably cost a lot at the start, but at least it can grow.