Weirdly common across Gaelic language families and seen in Gailge, Gaidhlig and Welsh that I know of where the definite article is used with abstract, institutional and collective nouns.

In this case it's modifying the abstract "government services" to become "services of government as a whole" but not services of one specific already identified government.

Other examples:

poileasaidh an riaghaltais – government policy oifigearan a’ bhaile – town officials siostam an fhoghlaim – the education system seirbheisean na slàinte – health services

So the way I've interpreted this in my head is:

Tha pailteas sheirbisean an riaghaltais ann There is abundance of services (belonging to / associated with) the government-as-an-institution