The difference is that you’re not living in the house if you’re a landlord. A smart landlord will still do high quality repairs on certain things: roof repairs, pipe leaks, electrical issues, etc. Not fixing those things quickly and fixing them well could result in long-term damage to the property. But, there’s another class of problems that are annoying to the tenant but not a priority for the landlord. For example, a toilet that doesn’t flush well. That’s an annoyance, but probably won’t damage the property in any way, so the landlord might not care much.
If you’re the landlord, it is your house.
The difference is that you’re not living in the house if you’re a landlord. A smart landlord will still do high quality repairs on certain things: roof repairs, pipe leaks, electrical issues, etc. Not fixing those things quickly and fixing them well could result in long-term damage to the property. But, there’s another class of problems that are annoying to the tenant but not a priority for the landlord. For example, a toilet that doesn’t flush well. That’s an annoyance, but probably won’t damage the property in any way, so the landlord might not care much.