Question to landlords: does rent control hurt your bottom line?

I understand the opportunity costs of rent control: if rents in your neighbourhood have gone up 50% this year you feel like a sucker if you can only raise them by 5%.

Similarly you might put off minor renovations (that don't require the tenant moving out) because you won't necessarily be able to charge more to make up for the cost (apart from selling the property).

But is it common to rent out a property below cost, assuming you can make it up later with rent increases? E.g. you just bought a property in Mountain View so your mortgage payments are high, plus the cost of all of the new appliances, and maybe it's an older house so labour and maintenance costs are higher than the $4k/mo you charge in rent.