Lol I've been in the bitcoin community since 2012. It is clear you have no idea what you're talking about. Early on we worked on colored coins that did exactly this. I'm just wondering why no one has continued the work.
Colored coins technology was built without making any changes to Bitcoin's protocol, but continuing its development to be competitive with Ethereum ecosystem would require making changes to Bitcoin's protocol, meaning hard forks, and devs want to avoid hard forks at all costs. It's simply not a big priority for Bitcoin, Bitcoin doesn't need lots of features, it needs to be robust decentralized money.