[infinii]

Because the reason is plainly stated in the article if you bothered to read it. Also, OSS existed for decades before the blockchain came along so to question any correlation between this and that would be absurd.

[subroutine]

I did bother to read the 7 paragraphs.

My question is basically that - OSS existed for decades; why only now in big finance?

That their clients wanted such a trading platform... is that the reason you are saying was plainly stated?