Isn't Google X that works on risky long term bets? And once projects graduate they are folded as new companies (or bets) within Alphabet.

My understanding was that Google X is modeled after Google's own founding. Long term, research project that was successfully commercialized within 5-7 years (I believe Google started as a research project in 96).

So once companies graduate in stable/mature businesses, shouldn't they be hold to any mature/public company standards?