Net worth taxes exist in a small number of places in Europe. It appears to be unpopular because it causes people to hide their assets and invest in assets that are harder to place a value on. Some places just have a property tax instead.

Revenue is taxed in many places; it’s called sales tax. Profit is also taxed. It is called an income tax / corporate tax.

Humans can deduct things so they are taxed at their profits. It's just that rules are not straightforward and what counts as a deductible expense is not the same for both. So you are aiming at the wrong level for a critique. See https://news.ycombinator.com/item?id=26698446