What tends to happen in areas where train systems go in after being eliminated for decades is that housing right near stations increases in value, but appeals only to singles or young couples, who mostly want smaller options. Once 2 breadwinners, and especially children, become part of the equation, living in an area with busy traffic and going everywhere by train is usually no longer an optimal situation. Car-shares were supposed to be the middle-ground solution, but the pandemic largely killed that option (and they tend to be quite expensive and hard to reserve at specific times. OK for grocery shopping, but much less so for driving Kindie carpool in the morning.)
These days, the best target for housing built near mass transit is students and singles who travel to cities for worlk. Young families tend to find such areas cost too much and have the wrong set of amenities for their needs. They are mostly dual-income families, though, so having one adult drive the other to the station usually isn't very workable either. (I say this as someone who works mostly at home and has been doing the station run for about a year, because DH has been taking the train to his center-city office and letting DD take his car to school and her job and her various suburban after-school activities. I often have to leave the house during the day to do tasks for clients in suburban areas, so I need my car available at short notice.)
One of the phenomena that turned up here when the train system was built is that they mis-judged how gender would influence nearby residents. The train comes close to a few hospitals, and it was presumed nearby housing would be attractive to medical workers. Med students do live in the nearby developments, but not so many female hospital staff, and not as many female students, either. What they now know was the catch is that single female medical workers do like living an easy commute to the hospitals where they work, but they won't ride the trains &/or walk near the stations alone at night, which takes away at least 33% of the available market, because there is always at least one of the 3 hospital shifts that requires a dark-time commute.