In western Europe cleaning DPFs for passenger cars is well established, partly because there are annual tech inspections. (Nevertheless, my nephew tells me there plenty suppliers willing to do the delete for very little money.)

Just had mine done when it landed in Rotterdam, company was Diesel Buchli. While searching I found one supplier in Germany that sends out a replacement DPF and charges a core fee until the item off the car is sent to them.

Given the hourly rates in the US (for removing the PDF) and the rapidly declining sales of diesel vehicles I doubt anyone will take up cleaning DPS for a living....

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2003 4.4i black ext./black int./black headliner (kid's runabout)
2014 535d X-drive, M package, silver/black interior

Sold but not forgotten:
2009 E70 35d, black ext./black int./black headliner (sold 2021)
2006 4.8iS Le Mans blue/cream int./black headliner, SOLD in 2012 sadly...

Other hardware:
2015 Cayenne S (wife's new DD and definitely wroooommmmm)
2016 Tundra 1794 edition crew cab, luxo hauler
2005 Tundra crew cab, weekend hauler. Sold after 150k very happy miles.