Why the Line Loss Pattern?

The top four incumbent telcos in the U.S. market, AT&T, Verizon, Qwest and Embarq, will lose around 2.3 to 2.6 million local access lines per quarter, according to IP Democracy.

These four service providers lost a combined 2.53 million local access lines during the fourth quarter of 2007, compared to 2.55 million in the third quarter, 2.64 million in the second quarter, 2.28 million in the first quarter. So the question is, why the steady pattern?

The consistent rate of loss might suggest a couple of things. Some share is shifting to cable voice providers, but the losses tend now to follow a pattern. When a new area is opened to marketing, the biggest losses occur in the first couple of quarters, and then some sort of "normalcy" occurs. That will tend to produce a linear rate of change, rather than a disruptive rate, over time.

And since the largest operators are now well into their deployment patterns, we probably are past the stage where a large amount of share shifts rapidly.

The other major sources of loss are fairly steady as well. There's some intentional churn caused by telcos shifting dial-up customers to broadband, which often means an access line is lost. But again, we are past the peak surge in broadband net additions. Every year, another couple of million dial-up accounts switch to broadband. But again, the rate of change is relatively stable.

Wireless substitution also continues, but that sort of line loss has never shown any "spikey" pattern. Some percentage of users simply decide, every quarter, to go wireless only, but with no noticeable change in attrition rate.

The other issue is that consumer customers once served by competitive providers are slowly churning back to the incumbents. So as competitive inroads are made on one hand, lines are being won back on the other.

On the other hand, telcos themselves increasingly are venturing out of region, and typically are competing for business lines. Rates of change are bounded by the size of sales forces, the rate at which existing contracts come up for renewal, the aging of phone equipment and other "change" factors that are fairly predictable.

In any given year, only a percentage of contracts are up for renewal; only a percentage of phone systems; only a percentage of new businesses or locations launched or closed.

Also, consumer VoIP adoption rates are flattening as well, again showing a sort of linear pattern, and contributing to the linear loss rate for legacy access lines.

The other thing is that incumbents, as a matter of policy, are not yet at the point where they are willing to make massive changes in pricing, technology or packaging to match VoIP competitors. What that means is that, as a matter of deliberate policy, executives will let the losses continue, at a controllable rate, until the point where it makes more business sense to respond with competitive efforts.

Nor have the largest carriers, for the most part, gone out of their way to emphasize wireless substitution. Quite to the contrary, bundling has provided incentives to keep a landline at very small incremental cost.

This might now begin to change a bit, with the advent of unlimited calling plans. Sprint or T-Mobile, who have no access lines to lose, might be expected to emphasize wireless substitution a bit more.

For some users, such plans create a new buying context. Assume a user with a landline and a wireless plan, plus a text messaging plan that collectively costs about $100 a month, living alone or in housing with unrelated people. That user now can spend about the same amount of money as at present, and shift all traffic to one device, with unlimited texting in some cases. If a Sprint plan is bought, the user will get unlimited Web browsing, music and video services as well.

The other thing is that consumer access lines, as opposed to business lines, are a lesser percentage of overall revenue than used to be the case. Major telcos fairly rapidly are getting to the point where consumer voice revenue is less important every year.

And since the foundation service for the future is a broadband access line, that is where telcos can be expected to fight hard for every point of share.

Maybe there are other explanations as well. But the gradual, steady erosion is not different from the pattern we saw with long distance revenue, which declined at a fairly steady rate for years.