Are you suggesting that provider A would sell access to the infrastructure at the same price to a retail customer as they would a wholesale customer (who is in turn the retail provider)?
No, I said "But they have to charge end-customers even more, because otherwise provider B would not have a sustainable business."
One has to consider that regulations would not permit simply undercutting the competition simply because they own the infra.
If you are going to regulate prices anyway, then like I said, this is just an economic welfare project for B, C, D. They aren't providing "competition" that is lowering prices... your regulation is lowering prices.
Yes, those providers are still captive HOWEVER they still have their own core networks and connections to other ASNs - the thing being leased in such a scenario is L2 or L3 access on some form of last mile infrastructure, we're not talking about VISPs or white-label providers or anything.
Yes but whether it's white-label or "real" access is irrelevant because it's still provider A that owns the infrastructure and makes the decisions. Look at the stuff going on with net neutrality. Comcast can just say "Ok, we're not upgrading this peering connection until Netflix pays us extra." And that screws Netflix and the other Level 3 customers trying to use that congested link.
In your scenario, why would it be any different (except apparently your price regulations would prevent Comcast from even being able to ask for more money). Let's say my neighborhood has crappy phone lines and low speed DSL, and I'm like screw provider A, I'm switching to B. When I switch from A to B, A still makes money. When I switch from B to C because of course the network still sucks, A still makes money. When I switch to D, thinking "My God, so many ISPs in this town.. surely one of them must be better" then A continues to make money. A has no incentive to upgrade my neighborhood's phone lines or reduce prices or anything, and the other providers aren't able to upgrade my neighborhood's phone lines or reduce prices below what A charges (plus their own overhead).
Oh, unless you regulate improvements as well as prices... in which case, like I said, the "competition" aspect of the situation is a sham.
I'm not sure you've ever seen real competition, and it would appear that you've never lived abroad (especially in a country where you have a 1-2 providers dealing with infrastructure and a multitude of retailers to choose from), have you?
No I have never lived abroad, but you're being silly now... ISPs aren't the only businesses that compete. I've seen plenty of competition. Toyota and Ford compete for my business, as an example. That's why I know that the only way to have effective competition is to have separate companies competing on the good or service in question. If I want to contrive a situation where I get provider A to upgrade the network infrastructure in my neighborhood, then I need to invent competition for the network infrastructure in my neighborhood. Not services running on top of it. That makes zero difference. If I want provider A to install new fiber lines, then you could add 15000 "competitors" who are forced to lease A's network and it would accomplish nothing at all.
But add 1 company like Google that runs new lines in my neighborhood, and suddenly provider A will either upgrade its infrastructure, dramatically lower prices, or go out of business. That's competition.