Unfortunately these days building out capacity is usually neither cheap nor fast, so it's not uncommon to get stuck in some sort of intermediate twilight zone where you have somewhat too many trains for too little tracks, but not so many that building out additional infrastructure is clearly warranted (and even when it is warranted, planning and construction will unfortunately nowadays take years to decades, and what do you do until then?).
Open access operators also often start running only a few trains per day – building additional expensive infrastructure for just a few trains per day might not be worth it, but conversely a few trains per day are potentially already more than enough to upset an exiting regular interval timetable and timed connections.
Open access operators also often start running only a few trains per day – building additional expensive infrastructure for just a few trains per day might not be worth it, but conversely a few trains per day are potentially already more than enough to upset an exiting regular interval timetable and timed connections.