In the platform is less common than on the platform, and in most of the examples found with in, platform is an attributive noun:. in the Platform Era; in the platform economy; in the platform society (Googlesearch)So, although the GNgram comparison between the two is not accurate, it does point to the fact that in the platform is still rare.. There is a particular instance where you can use in the platform in the way you suggest, when there are technical changes done in the structure or ...
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