What is actually happening to CPCs
If you have been running Google Ads for a local service business for the last three years, you have watched your cost per click roughly double in most verticals. Roofing, HVAC, med spa, legal, dental — the trajectory is similar. The common assumption is "more competition" but the reality is more structural.
Reason 1: private-equity consolidation
Through 2023-2026, private equity rolled up thousands of local service businesses — HVAC, plumbing, electrical, roofing. Those roll-ups are often operated by professional marketing teams with large budgets, and they bid aggressively on local keywords because their unit economics are optimized for scale. The small operator competing for the same clicks is now bidding against a well-capitalized consolidator.
Reason 2: platform margin pressure
Google is building AI Overview and Gemini. Those products answer queries without clicks, which reduces Google's ad revenue per search. To defend margins, Google has steadily shifted more surface area to paid results and refined auction mechanics to extract more per click. More ad slots. More aggressive bidding dynamics. Higher floors.
Reason 3: user behavior shift
More users now see AI Overview at the top of Google results and never scroll to the paid ads below. The click-through rate on paid ads has declined, which means to get the same lead volume you have to appear more often — which costs more. Google wins either way; advertisers pay more per lead that gets through.
What this means for your budget
If paid ads were 80% of your lead flow two years ago, keeping that mix today means doubling your ad spend to hold the same lead volume. If your conversion rate and close rate are flat, your cost per acquisition has roughly doubled. That math breaks eventually.
The counter-play: compound organic visibility
Paid acquisition is rented. Organic AI visibility is owned. AEO work compounds — once you are the default recommendation in ChatGPT for your category and city, you keep being named without additional spend. The signals that got you there (schema, entity authority, review consensus, citation density) do not get bid up quarter by quarter the way CPCs do.
What the transition looks like
Most operators do not quit paid overnight. The healthy move is to shift ratio. Start with 80% paid / 20% organic. Over 6-12 months of serious AEO work, shift to 50/50. The paid budget drops because leads start flowing organically. The remaining paid spend works harder because it is layered on top of a stronger brand and better organic trust signals.
When to layer paid back on
Paid is still useful for new product launches, promotions, and seasonal spikes. The goal is not to eliminate paid — it is to not depend on it as the only channel.