[ElProximo]

Its not a case of earning 800 pounds then the next week earning 2500.

In BB's case they were getting 2.5 million it was then reduced to 800,000. Can you grasp that fact? If not I can type it even slower.

Your original comparison was 'one person earning 800' and then another earning 2.5,
but,
Lets go with your revised example too:
Lets suppose BB (at one time) was raking in 2.5 million.
Great.
That is a massive pile of cash and a huge swirl for the economy action. Fantastic.
OK.
Now suppose this year they rake in 800 thousand.
Not as great but it is still 800 thousand more than zero!

To put it again in your 'personal home economy' and suppose you bring home 2500 one week.
Great.. good for you. Your Mum is happy you definitely stimulated your homes economy.
But this week the new job is 800 a week.
Yes?
This is still 800 worth of value. Its 800 MORE than you would have had otherwise.
You are +800
You have improved by 800.
Simple.
Did you 'lose money'?
NO.
You MADE 800!
Is it worth less than 800 by some sort of 'bell curve' deduction scheme siding the difference between 800 and 2500?
NO.
It is still worth and counted as '800 MORE' in your economy.
Excellent!