Sean, I have some deep domain expertise here.
For starters, I own 12-doors in Detroit (from California). But probably more valuable is my day-to-day experience. I help investors buy ratty houses in Detroit and get them through a rehab with my team on the ground.
I'm not saying that as a plug, I'm saying it because it is the ONLY way I see deals penciling out in the area today.
You used to be able to buy rent-ready homes and they'd have at least some net positive cash flow. It's very difficult to do that anymore today.
Some people will call BS but I've found 9 times out of 10 those folks are doing their numbers wrong. That could be anything from not accounting for capex/repairs/vacancy in their calculations or a complete lack of knowledge in how to calculate their future property tax obligation (this is a big deal in Michigan).
Just the other day I had a call with an investor looking at a 10-unit property in Detroit. His agent told him property taxes would be $5,000 annually. But we dug in and discovered they would be $24,000 instead. Needless to say, that killed the deal.
So yes, in today's environment you need some value add strategy if you expect to have some net positive cash flow at the end. Honestly, while I haven't been doing this for decades like many folks here, I believe this is likely how real estate investing has always been.
The last ~15 or so years were an anomaly and we may never see easy money like that again.