The problem here is that this is the exact opposite of what's going on - the competitive advantage of many smaller companies these days is that they are not even close to being compliant with regulations but platforms often tolerate them because they are not responsible for counterparty compliance.

If you do however put that onus on the platforms, then it's entirely predictable that platforms will cut ties with small businesses. This is more or less what happened with GDPR - lots of small ad-tech players became large liabilities for others in the value chain, leading to more consolidation in the industry. Outside of technology, it's common for certain types of services or tools not to be made aware to small-time customers. The technology industry at large and the large tech companies in particular have so far bucked this trend in a way that created a huge amount of value for the world at large, but this doesn't have to be this way.