Just read your o/p doze, not the replies (cba) , so if it’s been said apologies.
A good opportunity to boast here (which I invariably do about my kids : 
), but my eldest lad is a Ford ‘mastertech’ and service manager at a Ford dealership (done much better than I did with my life btw, but that’s another story).he has a certificate which puts him in the top 20 Ford specialists in the country. 
His response was …‘‘If it is serviced regularly …and properly’’ 
, and he’s assuming it’s a ‘EcoBoost’ wet belt ( nah me either 
) ‘‘and the timing belt is changed according to Ford guideline and recommendations, ie every 10 year from new or 150000 miles whichever comes first, it should go on forever’’ …not literally btw.so don’t sue him/me. 
A Ford agent will charge you a good day’s labour for a timing belt change whatever their varying labour rate per hour is.
Hope that’s of some use.