I wonder how this will end, because going by what OP suggests, not so well.

Looking at the lack of data though and just going by the words, this makes it sound like it was very, very bad for PC to "take so long" to gain those numbers while making it look better for PS4. I wonder how much we'll get out of this topic....

Also using CHinese users and then exclusiding them isn't logically sound. Also excluding users who don't have a Steam account, while also not counting those that have a:

Battle.net

GoG

Origin

Epic

Uplay

Bethesda.net accounts.

When you add all account types and their numbers, then yes they greatly dwarf what numbers the PS4 has, and I doubt that PS4 will surpass all those account numbers combined, and let's not make the argument that every user using all those accounts are all magically "steam users".

Pretty sure that 95% of PC Gamers have a Steam account. Not even going to argue it with you. If you don't believe that, then there's nothing I can say that will convince you otherwise. 

I thought this was pretty interesting. That means that not counting China there are about 105 million Steam Users out there. PS4 should easily surpass 85 million by the end of this year, and that's only after 5 years on the market. Steam on the other hand has had 14 years or more to get all those users. Yes, I realize that not all PC Gamers have a Steam Account, but almost all do. And this is counting non-Chinese Steam Users that don't have a PC as powerful as a PS4.  I thought PC Gamers outnumbered Console Gamers in most regions of the developed world. But this suggests otherwise.

I thought this was pretty interesting. That means that not counting China there are about 105 million Steam Users out there. PS4 should easily surpass 85 million by the end of this year, and that's only after 5 years on the market. Steam on the other hand has had 14 years or more to get all those users. Yes, I realize that not all PC Gamers have a Steam Account, but almost all do. And this is counting non-Chinese Steam Users that don't have a PC as powerful as a PS4.  I thought PC Gamers outnumbered Console Gamers in most regions of the developed world. But this suggests otherwise.

Less than 28% speak Chinese according to Valve:

If I say "Pretty Sure" then I'm not claiming it as an indisputable fact. And facts are by definition indisputable. I'm choosing to ignore everybody that argues otherwise, not because I think I'm 100% right. I don't, and the phrase "Pretty Sure" proves that. I'm choosing to ignore anybody that argues otherwise, because like me, they have no way to concretely prove their claim. And their claim is that there is a large enough portion of PC Gamers that don't also have a Steam account to effect the outcome of this discussion. We might as well argue over how many teapots are orbiting the earth, or whether or not we all live in a massive computer simulation. Their claim about the number of PC Gamers who don't have Steam accounts is either objectively true or objectively false. But it is outside of our current ability to prove it either true or false. 

And yes, the inability to prove it either way does make my argument inconclusive. But if you start every rebuttal with "it's possible that X", then almost nothing is going to be conclusive ever. 

That's according to Steam's hardware survey. Meaning what percentage of hardware running steam has Simplified Chinese set as the default on their hardware. The problem is that because of the rise of Internet Cafes multiple Chinese speaking Steam users share the same computers. The important thing to remember here is that Steam's hardware survey for language settings does not equal the total number of Chinese speakers that have a Steam account. 

 From Valve - "Historically, the survey used a client-side method to ensure that systems were counted only once per year, in order to provide an accurate picture of the entire Steam user population. It turns out, however, that many cyber cafes manage their hardware in a way that was causing their customers to be over counted.

Around August 2017, we started seeing larger-than-usual movement in certain stats, notably an increase in Windows 7 usage, an increase in quad-core CPU usage, as well as changes in CPU and GPU market share. This period also saw a large increase in the use of Simplified Chinese. All of these coincided with an increase in Steam usage in cyber cafes in Asia, whose customers were being over counted in the survey."

If I say "Pretty Sure" then I'm not claiming it as an indisputable fact. And facts are by definition indisputable. I'm choosing to ignore everybody that argues otherwise, not because I think I'm 100% right. I don't, and the phrase "Pretty Sure" proves that. I'm choosing to ignore anybody that argues otherwise, because like me, they have no way to concretely prove their claim. And their claim is that there is a large enough portion of PC Gamers that don't also have a Steam account to effect the outcome of this discussion. We might as well argue over how many teapots are orbiting the earth, or whether or not we all live in a massive computer simulation. Their claim about the number of PC Gamers who don't have Steam accounts is either objectively true or objectively false. But it is outside of our current ability to prove it either true or false. 

And yes, the inability to prove it either way does make my argument inconclusive. But if you start every rebuttal with "it's possible that X", then almost nothing is going to be conclusive ever.