And in Buffets case, he buys undervalued companies with good fundamental business.

As long as every one of my investment is based on good fundamentals and numbers, then even during downturns, I would not be worried. 

Which is also the fundamental problem with wholesaling.

Not just because I'm biased towards turnkeys because they are what I invest in, but they teach a ton about the fundamentals and then once someone knows those, I can't imagine their BRRRR success not being much higher than it would be otherwise.

The fundamentals of real estate are the same regardless of which side of the border you’re on, and there is definitely an endless amount to learn.

All the fundamentals are solid.

In my area the cost of a SFR is hard to get into cost wise.I would not buy a property just based on the STR income potential but other fundamentals need to be considered.Comps, condition, standard rental value, cost per sq foot, etcHave a good exit plan and alternative strategy. ie: regular rental, owner occupied, resell etc

That's why a passive investor should always perform their own due diligence on the deal, the team, and the market before investing.For the deal, you want to review their underwriting assumptions (debt, rents, annual income and expense increases, etc.).For the team, you want to review their track record of successfully taking deals full cycleFor the market, you want to review the fundamentals (population growth, job growth, job diversity, median income to median rent ratio, etc.)

As you continue to research and learn more about this world you'll find parallels that will enable your fundamentals to kick in and it'll be off to the races.

Also trying to focus myself on analysis fundamentals.