Passive income is an income that will come if you work or dont work, live or die, etc...
In comparing the opportunity to make a $2000/mo passive income with those other two, I think the doTERRA business is a much easier route.
For my alarm business I have had to work for over 10 years and my passive income from my customers is just over that amount. Who wants to work for 10 years and get a $2k a month residual? Well I guess its better than no residual income.
For my rental properties. Sure I bought them with $0 down years ago, but I have sunk thousands into them since. I just finished a $2500 remodel on a unit that a tenant passed away in. Before that I replaced a roof a few months back for close to $8000. And the list goes on and on. I have probably spent at least $50,000 on my 3 properties/8 units. After all of this I am hoping to maintain a passive income of around $1000/mo. I have had some fun doing these remodels, tiling, painting, etc... but still only a $1000 a month residual if that?
With doTERRA you can reach a $2000 a month residual by taking advantage of their power of 3 bonus. Step 1 is find 3 with 150PV of monthly orders. Step 2 is help those 3 find their 3. Step 3 is help those nine find their 3. Total is 40 people including you. This could take someone a month or it could take someone 10 years! But either way it is totally worth it.
I think it is much easier to find 3-39 people that want natural medicine than buy rental properties and fix them all the time. I think it is easier to find 3-39 people that want natural medicine than find hundreds of alarm customers over 10 years. Besides from being easier it is also much less expensive to share natural medicine with others than it is to pay for advertising for customers or pay down payments for rental properties.

The average person that is getting social security is getting less than $1000 a month. The average retirement income is around $3000/mo. Why wouldnt everyone want a little additional security and comfort?