A philosophical Captain Obvious observation on why certain car-care and detailing products are no longer manufactured and/or become obsolete:
1a) A newer, game-changing product comes out, challenging the sales preference of the detailing consumer (coatings versus waxes).
1b) Manufacturers unable to meet customer preferences or change and develop new products.
(ClearKote's Vanilla Moose Wax)
2) Changes in government legislation outlawing the production of certain car-care product to meet social concerns about their effects on the environment or personal health and safety. (Volatile Organic Compounds legislation that killed M16 Paste Wax)
3) Changes to automotive materials. obsoleting the use of certain no-longer-viable-or-needed car-care products.(Single stage paints to Clear Coats, PPE, and OEM matte finishes)
4) Geopolitical events or trade embargos make obtaining key minerals, man-made materials, or chemicals impossible to source or replace with another substitute in the manufacturing of certain car-care products.
5) Key ingredients become expensive, making the car-care products no longer cost-effective for consumer preferences.
6) Changes in company ownership, either because family members have passed on or the original owner sold the company for personal profit or because of health reasons. (See Adam's Polish product "concerns" above).
7) Law suites and subsequent litigation and judgements financially cripple or bankrupt the car-care product company out of business.
(Auto Wax's Clay Magic versus Mark V and Mother's Wax)
8a) Bad product reviews or experiences or bad marketing decisions impact the company's profitability (AutoGlym at Walmart)
8b) After beta testing and consumer hands-on focus group reviews, product is brought to market but never sells as expected.
(Lake Country User-Defined Orbital Stroke 3-in1 polisher)
9) Car-care product manufacturers consolidate companies or buy out and merge competitors, often eliminating former cross-competing duplicate products. (3M and Meguiar's)
10) Former employee(s) starts new car-care products company with similar products of old company, reducing market share and profitability of former company (Meguiar's and Finish-Kare or ColourLock and Geist).