My parents (and I) don't know how to invest. We've never done it; we are not financially knowledgable enough. The only thing they know to do is buy land, and to be fair, it's worked out well for them. The last major property they bought for $2million, and then sold it to a development company for $10mill. Then they took that $10mill and bought 20 acres of undeveloped beachfront property which my dad feels will be worth $40-50mill by the time he passes. All their money is tied up in land and they have very little liquid cash, so they live like misers.
I disagree that your family doesn’t know how to invest. They have invested in land!
You are correct about one major problem with real estate investing is that it leaves you wealthy but cash poor. The bigger issue that I have is they are putting all their eggs in one basket. If land values crash, then they will have nothing but some grains of sand and a pretty view. Living your whole life as a miserly pauper to have a good view is not a great tradeoff. Public beaches are free and private beaches are cheap if you are willing to travel. They could both live great and have that sandy beach view.
You don’t need to know much at all to invest. Do as Warren Buffet recommends – buy an index fund and forget about it. You didn’t mention any timelines, so I’ll just guess. If your parents had put $2 million into an S&P tracking fund that reinvests dividends in 1978 and had a terrible fund manager with 2% annual fees, then they’d have $90 million right now. Or, going with Vanguards 0.04% fee for VIMAX, their $2 million would now be worth $161 million. That is it, buy one fund and forget about it. There are other similar S&P tracking funds or even whole world tracking funds that are equally good, which one they pick isn’t important (as long as you avoid high fees), just investing is what is important.
If they buy a stock fund and forget about it until you inherit it, then remember that
inherited stock gains are income tax free. There will be estate taxes on the gains, but no income taxes. Then you can immediately sell some inherited stock (income tax free) to pay any estate taxes on the property.
Investing really can be that simple. Buy one thing in a few minutes of time and you are done.