They get paid to do it, and you could be the next customer. 

or do I only incorporate myself in Canada?

Wiey Underwood I answered a similar question in the thread link below and listed several of the cost segregation companies that our customers use (not necessarily partners).https://www.biggerpockets.com/forums/51/topics/1163125-mater...

We use a custom spreadsheet and DealCheck to break down key metrics like cash-on-cash return, cap rate, and debt service coverage ratio (DSCR).

Having worked in corporate architecture firm for 13 yrs before opening my own firm, I understand your basis @Jay Hinrichs and it's totally accurate.

I’m very big on having the proper customer support and making sure if I buy something I can contact their support to get more info/refunds etc.

Listing agents would not drive their own pipelines; they would be advisors, high-quality customer service reps assigned to clients.

Use customized leases with state-specific templates and consult a lawyer for complex issues.

This discrepancy can strain property owners financially.I onboarded a customer and later found out he was way over the set furnishing budget.

So, you have to understand your customer as well as part of learning your market.