A balance patch changes a handful of numbers and can rearrange an entire competitive format. The scale of the effect comes from how the changed elements were connected to unchanged ones.
Viability is relative, not absolute
Whether an option is used depends on how it compares with alternatives for the same role. Weakening one choice therefore strengthens everything it competed with.
This is why patch notes listing three adjustments can move a dozen picks. The untouched options changed position without changing at all.
Teams read patches with this in mind, looking first at what the changes make newly viable rather than at the changed item itself.
Small numbers cross decision thresholds
Competitive play is full of thresholds: whether an ability kills in one use, whether an objective can be taken before an opponent arrives, whether a build completes before a timing window.
A change of a few percent is irrelevant except when it crosses one of these lines. Then the change is binary rather than incremental.
This is why apparently tiny adjustments sometimes remove a strategy entirely. The number moved slightly and the outcome it enabled disappeared.
Discovery takes longer than the patch cycle
Finding what a patch enables requires many hours of practice by many teams. Strong strategies are often identified weeks after release.
Where patches arrive faster than that, the metagame never settles. Teams optimise against a moving target and default to familiar, safe choices.
Publishers running competitive seasons therefore slow or freeze patching during major events. Stability is a precondition for depth.
Professional and public metas diverge
Coordinated teams can execute strategies that fail without communication, so a pick that dominates professional play can be weak in ordinary matchmaking.
Balancing for one damages the other. A change that reins in professional dominance can render an option useless for everyone else.
Some games resolve this by applying different rules in tournament settings. The cost is that spectators no longer play the same game they are watching.
Teams adapt at different speeds
Organisations with analysts and dedicated practice time convert patch information into prepared strategies faster than those without.
Immediately after a patch, results therefore reflect preparation infrastructure as much as player skill. The advantage decays as strategies become public.
This is why patch timing before a tournament is contentious. Changing the game late rewards resources rather than performance.