The payoff for success in the venture is called a capital gain. Failure is termed a capital loss. It's bad enough when the government puts a high tax on capital gain, because the people who lose the most from a high rate are the poorest, the youngest, those at the beginning of their careers, those who are furthest from sources of capital. But when the government also taxes gains that arise from inflation, not real gains, then the flow of fresh capital from those who have it to those who need it really dries up. The rate then becomes confiscatory.
Inflation is a direct result of the monetary or fiscal irresponsibility of government.
To penalize participants in the private economy for the mistakes of government seems to me to be the height of arrogance and irresponsibility. The price of their property has gone up in the last 25 years, but the value is about the same, in terms of other goods and services that have also risen in price. So they don't sell the property, unless they are forced to sell in distress. It can't be sold to someone who could make better use of the farm or home or business, with the proceeds to the current owner then invested in a new enterprise. If the government decided tomorrow that it wasn't fair to tax all that inflated gain, it would immediately come unlocked.