It's not a perfect fit, but you might consider creative limitation (or, as an alternative, creative constraint).
To use your own words, you could say a platform-defining creative limitation to make the term (more or less) fit your specific use case.
According to a (very short) stub article on Wikipedia:
Creative limitation is the concept of how purposely limiting oneself
can actually drive creativity. At a 2013 TED conference, artist Phil
Hansen made several remarks concerning the value of limitations, among
them that "We need to first be limited in order to become limitless,”
and “If you treat the problems as possibilities, life will start to
dance with you in the most amazing ways.”
limitation can also be thought of as way to achieve a novel effect or
goal that is not otherwise possible using conventional, readily
accessible, methods. Igor Stravinsky used what he called creative
limitation with time signatures, by restricting himself from using
any, in his composition 'The Rite of Spring' as well as in alternate
aspects of his other musical works.
(A related term is constrained writing, where specific literary forms are used to channel creativity - most obviously in poetry, through rhyme schemes or metrical patterns, for example.)
There's no end of pop-psychology/business fluff pieces out there on this concept - Silicon Valley types are very keen on the idea of creative limitation.
Here is one example from an article called "The Psychology of Limitations: How and Why Constraints Can Make You More Creative":
When now-Yahoo! CEO Marissa Mayer was at Google, she was a big
believer in creative limitations when it came to development, often
capping prototyping time for a new feature. “We often can get a sense
of just how good a new concept is if we only prototype for a single
day or week,” she said. “In the case of the Toolbar beta, several key
features (custom buttons, shared bookmarks) were tried out in under a
week. In fact, during the brainstorming phase, we came up with about
five times as many ‘key features.’ Most were discarded after a week of
prototyping. Since only 1 in every 5 to 10 ideas works out, the
strategy of limiting the time we have to prove that an idea works
allows us to try out more ideas, increasing our odds of success.”
The two terms, creative constraint and creative limitation, at times seem to be used interchangeably. I believe the terminology is, in fact, not quite as set or established as the Wikipedia article on creative limitation might seem to imply. For instance, a Forbes article on the same topic uses neither creative limitation nor creative constraint, referring only to "limitations and constraints" in the context of driving creativity.
Somewhat unfortunately for creative limitation as a term, it can legitimately be used to mean something entirely different - the limitation of someone's creative capacity and, by inference, that someone's lack of creativity - so there is a real possibility of being misunderstood by someone who is not familiar with the concept, unless the context is clear.
This ambiguity also makes the Ngrams for creative limitation next to useless in determining when the phrase emerged... if, indeed, it has definitively emerged. The concept is out there but neither creative limitation nor creative constraint seems to have fully attached to it.