following is an explanation of the 10% rule by taking the example of The Mentoring Club as a product, learn more about The Mentoring Club by clicking on the given link.
if we take the entire internet as the marketplace
we will basically be competing with linkedin
if 10% of all linkedin users is 25 million
we will aim to reach that number
but there is a simpler way
use the 10% rule and reach the 10% inflection point only for one city, Berlin
let me show you how
if the total number of tech professionals in Berlin is 240,000
10% of this number is = 24000
this number is way easier to hit
and, after we have achieved this number, we will have in place a strategic plan with an SOP to scale for 1 city
we will then replicate this for any similar city in the world, let’s say london, paris, sf and so on
just like uber scaled across cities to reach this number
we will also be able to leverage the prevailing winds
which are blowing in the direction of people wanting to have real world interactions after 2 years of lockdowns
what we need is, 24000 mentoring sessions, which lead to at least 1 more mentoring session
i.e unique mentoring sessions with a net positive experience
so if we hit this number, according to the cited link, the mentoring club will become the dominant professional networking service within Berlin
either Xing will want to acquire The Mentoring Club outright or Linkedin will start thinking seriously about copying The Mentoring Club features https://fs.blog/2017/07/critical-mass/
Usman Gondal 
One thought on “the 10% rule—How to achieve massive product adoption”