How would a consumer know that they are "harmed" by Google's shenanigans when those shenanigans involve deleting the competition before it gets the chance to c

How would a consumer know that they are "harmed" by Google's shenanigans when those shenanigans involve deleting the competition before it gets the chance to compete? This sounds like a catch 22 type of definition of monopoly. Businesses need competition for the free market to work properly.