Some of the ideas about NRPs suggested here are laughable, here's my example.
Before splitting, my EXDP would threaten that he'd be taking the DC to live with him full-time, so I should think carefully about what I wanted to do regarding our relationship.
Upon splitting he announced he'd be renting a 1 bedroom flat (he has 3 DC, including the 2 we share), and has seen the DC on average one weekend a month since then. This is a Nan who earns more than twice the average wage and has almost six figures worth of house proceeds in the bank, so is far from destitute.
He has just announced he's going abroad for 6 weeks over Christmas, so clearly won't be seeing the DC at all, and expects me to continue doing everything.
None of the above was discussed with anyone, since splitting he has never even hinted that he wants to split care, because it suits him to have all his free time to himself bar 2 days on a month. RPs cannot take NRPs to court to
force NRPs to see their DC, so in reality it's the NRP obstructing greater access to their DC, not the RP.
My EXDP is typical of all the NRPs I have ever come across.