I'm here to tell you that preservation is at it's core anti-capitalist. To be a preservationist is to recognize that our built environment has value and importance beyond the value a developer can extract from a property at any given point in time. I'm a proud preservationist.
Here's a case study: Casa Aztlan in Pilsen. A developer purchased the historic community space, whitewashed the historic mural, and turned the building into apartments. YIMBYs would look at the apartment units added and say: "this is a win for the community." Wrong.
The building's use as a community space mattered. The mural as a historical and cultural marker mattered. As a preservationist, I see Casa Aztlan's value beyond the monetary value sought by the developer. https://chicagoist.com/2017/06/20/pilsen_mourns_as_iconic_casa_aztlan.php
The community fought to preserve and restore the Casa Aztlan mural - and won! Preservation fights can often be important flashpoints of struggle where working people take on capital. https://news.wttw.com/2017/07/06/loss-iconic-pilsen-mural-sparks-outrage
Perhaps Casa Aztlan could have been redeveloped in a way that preserved the community use, preserved the mural, and added affordable units. But accomplishing that outcome would likely have required a more restrictive zoning at the outset, and government subsidy.