So, if your battery is at 800 charge cycles, you expect a FREE battery?
Have you never seen the warranty for car tires or car batteries. Both are "pro-rated" in various ways. Why? Because those items are "Consumables".
For example, car batteries are generally considered to last about 5 years, and is tracked to a granularity of ONE MONTH. Often the battery will be at full-replacement-value if the failure happens within the first two or three years; but then, the "Pro-rated" warranty clause starts nibbling away, month-by-month, at how much "credit" against a replacement PURCHASE you'll be given.
For example, using the Exide Corporation's warranty info page (just the first one that came up on a Google search), you can see their "Invatubular"-model car batteries have the following warranty (and notice, this says NOTHING about the LABOR cost being covered; so it is most likely NOT):
0 - 36 months: Full Replacement Value
36 - 42 months: 20% Discount on new battery PURCHASE
42 - 48 months: 10% Discount on a new battery PURCHASE
http://www.exideindustries.com/products/industrial-batteries/warranty-terms.aspx
And, as I said, LABOR NOT INCLUDED, EVEN IF THE BATTERY FAILS IN THE FIRST 36 MONTHS!!!
So, in an attempt to correlate this with Charge-Cycles, and using Apple's criteria of "80% charge retention after 500 charge/discharge cycles", we have the following:
Failure to hold 80% charge after:
0 - 500 cycles: Full Replacement (Apple's standard policy for a "defective" battery)
500-600 cycles: 20% off of $79, or roughly $63 Replacement Cost (we'll not quibble about how much is battery vs. labor. Too hard to figure)
600-700 cycles: 10% off of $79, or roughly $71 Replacement Cost
THAT would be like a typical "battery warranty". And as you can see, even at $79, Apple isn't exactly "profiteering", even if replacing a 501-cycle battery for $79. They would only be making about $15.80 at that level over a realistic "pro-rated" battery warranty, and only about $7.90 on a 601-cycle battery.
And don't forget, the LABOR is included, UNLIKE the car-battery (even at the "Full Replacement" level)
But now, Apple is now replacing batteries at what HAS to be or below cost. That restores your "Deliberately slowed-down phone" (even one that is up to 40 months old (iPhone 6 available in the U.S. since 9/14/14, and which could conceivably have up to 1,200 charge-cycles (assuming charging once-per-day for heavy use)) to like-new performance, and likely for as long as you are going to keep that particular model. For a flat, NON-PRO-RATED, $29.
Sorry, but I think Apple is being QUITE reasonable, considering this is a BATTERY with a LIMITED LIFESPAN we're talking about.
And yet, you STILL aren't satisfied.
Ridiculous.