Not just developers, but lawyers, accountants, analysts... I think you grossly underestimate complexity of this thing.
We implemented relatively simple income tax reform a few decade ago in small EU jurisdiction. But law makers were very vague in some important details, and there were about 8 different interpretations. We had to implement, run and support all 8 versions for couple of years, until they decided on final interpretation. Non compliance would be fine of couple of million euro.
And that was tiny country of 5 million people with clean newly written laws. Not babylon with 300 years of baggage like US.
We implemented relatively simple income tax reform a few decade ago in small EU jurisdiction. But law makers were very vague in some important details, and there were about 8 different interpretations. We had to implement, run and support all 8 versions for couple of years, until they decided on final interpretation. Non compliance would be fine of couple of million euro.
And that was tiny country of 5 million people with clean newly written laws. Not babylon with 300 years of baggage like US.