General Question about New Growths

[zxyqu]

Hey everyone. I've spoiled myself with numerous Oncs over the years, and I just had a quick question that I never seem to find an answer for.
Having seen several plants, I get plenty of new growths. That said, for whatever reason, I tend to lose some 30-40% of the new growths. It almost always happens when the plant has 2+ new growths. While the reasons could be condition/environment/etc, I was wondering if it's more just survival of the fittest growths to the Onc. Does the plant just decide one growth is better, or could I be killing off half my growths on accident? Any thoughts?