I live in a rural area. The other day someone from OpenReach came to the door surveying for FTTP. I pointed out where the existing, buried, phone line comes into the premises along the longest diagonal - in addition to the original retaining wall it runs under a hedge, some fruit tree roots, the greenhouse, the concrete drive and the concrete laid paving stones before coming through the 2' wide concrete foundations. As I'd downloaded both 32 and 64 bit Devuan DVD imagess via the FTTC connection just before he arrived I felt able to resist his offer of overhead FTTP and whatever extra costs it would have meant.
When your "slower" is quite fast enough for purpose I'm not going to throw away good money on something that produces no effective improvement.