Why don't governments handle funeral arrangements instead of families?

Can you be more specific about which governments, as I think that the governments of most English speaking countries do handle funeral arrangements where necessary, and it's not limited to them but a fairly ancient practice.

I don't live in the UK, but the BBC is always a good source, compared to Wikipedia anyway:

"National assistance funerals, as they are known, are carried out by local authorities for people who die alone or with relatives who are not able to pay."

https://www.bbc.com/news/uk-scotland-37999757

https://en.wikipedia.org/wiki/Pauper%27s_funeral

https://en.wikipedia.org/wiki/Public_health_funeral

https://en.wikipedia.org/wiki/Potter%27s_field

Funerals are generally for the benefit of the living, no?

Subsidizing the cost would be one thing—modern funeral expenses, at least in America, can get truly bananas—but taking over the arrangements themselves might deprive the dead's loved ones of a chance to hold specific religious rites, serve a meal with personal significance, choose a meaningful engraving for the headstone (and find a particular plot of land for them to come visit it later), and so on.

Rather than a burden on your loved ones, think of it as a chance for them all to say goodbye and share how much they're going to miss you!

the state treats everyone equally, so no "according to their wishes"

But i m sure if nobody is interested in the body, a standard burial does take place.

What happens if nobody pay for the funeral?