I don't think that's much of a factor Andrew. The majority of those who stand to gain will be with BT and not even aware of the other companies. Most of them wouldn't move away from BT even if they were.
Even I, knowing what I do, having been with BT for phone all my life was very reluctant. It was when I actually opened a bill for line plus evening and weekends and discovered my previously free caller display was being charged despite having been on TPS for decades, with a total of over £24 per month, that I decided enough was enough.
However my total spend in fact went up a bit when I switched the phone away. It released sufficient for me to almost match the total I was already paying but move to a premium broadband provider. Something I previously regarded as too expensive.
I take most of the points you make in your News Article I've just read. I for one may have stayed with BT, but only for phone. However as I have so far a perfectly satisfactory service from my current supplier I strongly doubt if I will move back.
Monopoly power or not, millions of landline-only users are being ripped off to subsidise the Sport side of BT. It needs to be stopped.
Re your point in the article about bundle prices, that's about all I quibble with. At that point it is a reasonably competitive market. If bundle prices rise to maintain existing gross profit margins, in both senses perhaps

, that is what should happen. Those paying 50% over-priced landline rental should not be in effect forced to subsidise the entertainment of users streaming BT Sport or Sky Sport.
Kindness isn't going to cure the world of all its awfulness but it's a good place to begin. Daisy Ridley.
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