No doubt, this is a substantial reason why the government does not do the bill.
Another big reason is that in many (most?) other countries the number of exceptions (deductions, exemptions, etc.) is much smaller, so it is much easier for the government to figure your taxes based on your income reported from the employer. I live in NZ, and I would say the average guy does not file a return. If every scrap of income he made was from a job, or bank interest, or pension payments, or dividends lodged with a broker, then the government has already taxed those things at source and there is nothing more to be said.
On the other hand, there are some items which can be claimed to reduce tax that the government may not know about. This leads to an entire industry in NZ which helps people figure out if they have a refund coming that they did not know about. Most people do not.
And I have been very satisfied every year using Turbotax to prepare my US returns from NZ. The ability to link to financial institutions and automatically download the data is a real plus. For several years Intuit did not allow one to efile with a foreign address, but now they do, and that is icing on the cake.