Right now multi-account boss farming is generating too much inflation and killing the economy.
 

Let's dig into details.

How much does a single basic account generate weekly ?

Let's take the basic account:
4 regions + transportation quests 
With such an account, you won't have access to all bosses, you will roughly get 30 bosses which means 15 bosses / week.
Let's take a boss cost of 1 subway + 1 max repel + 1 escape rope = 2500 + 625 + 550 = 3125
Most bosses give 25-35k, some give double, a few aren't doable on hard and give 15-20k. Let's take a low 25k average reward.
Weekly revenue of doing boss is around : 15 x (25-3,125) = 328k

How much time needed for a boss clear ?

 

With a fast boss team you need less than 20 turns to clear the boss
(example = cottonee: switcheroo or cotton spore > bidoof: taunt or rocks > smeargle: disable , shell smash x 2 , baton pass > pangoro : power trip x 6)
Let's take a 3 minute clear time.
Let's add 2 minutes walk + 1 minute transportation
6 minutes per boss
Since we do 15 bosses we get 15 x 6 = 90 minutes = 1h30 minute per boss clear

How much can you really generate with bosses weekly ?

A player is allowed to use 4 accounts.
With 4 accounts having both regions unlocked:  you can do 4 x 2 x 15 = 120 bosses per week and generate 8 x 328k = 2,5M p$ weekly with 12h invested.

How hard is it to get this money generating system working ?

You need 12h to do bosses on 4 accounts.
It's time consuming but the pay is worth and you can do it easily while watching a movie / doing whatever stuff near computer.

Obviously you also need 4 accounts with both regions unlocked. Is it a big expense ?
No, It's either 20-40h doing story or  you can just hire someone to do it for you (1,5-2,5M cost)
With the free reroll from eumi island + the reroll from the 1st 40 wins at suspicious you already almost pay back the investment (1,3-1,5M worth almost instantly back in your pocket)

Which consequences does it have on economy ?

Well it basically generates inflation = the money looses value.
The more money ingame, the more purchasing power gets lower (since people are in average wealthier and will pay much more for the same "rare" goods)
As a consequence, the price of epic / shinies /coins rises and will keep rising when conventionnal ways of farming money didn't change.
The only way to be compete efficiently is to either buy cc in cash / be a great reseller / be extremely lucky in your farm / farm multi-account.
It is a big issue for new players who will need and increasingly high playtime to get into the endgame part.

What about money sinks ?
 

The classic money sinks just can't counterbalance a single player getting 2,5M a week.
Let's take someone with quite high expenses both farm and pvp into account:
buying weekly pass = 100k
buying TMs = 600K
buying 1200 max repel = 750k
buying balls = 300k
buying escape ropes = 150k
=>only 1,9M expenses in money sinks with really "optimistic" calculations (obviously such heights are reachable but unlikely to be done every week)

How to balance boss farming ? (my suggestion)

 

I won't ask to remove the 4 account rules. It was decided like this so ok, why not. I think 2 would have been way better but let's stick to 4.
Bosses should still be rewarding on the main account. it would really hinder mono-account players else and that would not be fair.

We just need to reduce the amount of p$ generated outside of the main account,
Bosses farm should still be worth but should rely mostly on the other rewards: combat items and pokemons.
A solution would be for each player to file an account declaration in his dashboard: main account and secondary ones. Once he validates the "secondary" status on each of the accounts he is allowed to use them as he pleases. However, the boss p$ reward on those "secondary" accounts would be reduced (I think reducing to 20% of the p$ reward would be fair)

 

Already saw this post 3 time in the past,
Well done but result is always the same.