You're talking about competing as a consumer map/gps, which is not what the blog post is talking about (or the parent comment, I assume).
Rather, GMaps used to be the default choice if you wanted to build an app on top of a map (in this case, looking at the effects of nuclear bomb detonations). The blog post explains why GMaps is no longer a reasonable choice, which (as the parent notes) opens up room for competitors.
Rather, GMaps used to be the default choice if you wanted to build an app on top of a map (in this case, looking at the effects of nuclear bomb detonations). The blog post explains why GMaps is no longer a reasonable choice, which (as the parent notes) opens up room for competitors.