No, the long term average rate of return of the stock market/mutual funds/etc. is about 6-7 percent in real terms (about 10 percent nominal with inflation). So, an invested dollar roughly doubles in value over 10-12 years (see the Rule of 72). Any time line shorter than ten years is not long term by definition. Hedge funds and some individuals engage in riskier things like derivatives (essentially bets), options, commodities, and sometimes assets that are speculative to achieve higher returns such as bonds from bankrupt companies, junk bonds, real estate, etc.
Gilt edged Bonds, money market, etc. all give low rates because of perceived low risks. From memory, believe the long term on normal bonds is about 1-2 percent normal long term return (real) which is enough for wealth retention but not much room for growth. (rule of 72--72 to 36 years for doubling of investment).
https://www.thesimpledollar.com/where-does-7-come-from-when-it-comes-to-long-term-stock-returns/ and
https://www.investopedia.com/ask/answers/042415/what-average-annual-return-sp-500.asp
Collectibles are far more volatile in value as they tend to thrive in loose money--higher inflation and go down significantly during economic downturns with tight money and low inflation. They also represent, like gold and silver, ways to hedge your bets when the economy and government appears shaky in stability as they are easy to conceal, allow one to keep wealth off the books, are not taxed (unless you are in a jurisdiction with a personal property tax) typically until unloaded at market prices, etc. They also represent a chance, like art, to grab money from the nouveau riche when unloaded.
The people that usually suffer the most in investment markets are those that go all in for a particular investment (and that can include using resources to create a business as well) but that can give the highest gain as well. Thus, investment depends on your tolerance for risk and willingness to be a bankrupt pauper in return for the highest possible returns. Most of us are not that risk tolerant.