Who exactly the oppressed class under the Public Finance mode of production (if it can even be considered a distinct mode of production) would be is the important question.

Huh, I never really thought of that

I think as we transition deeper into a "Gig Economy" world, the answer is the Lumpenproletariat.

Lumpenprole?

I think I'm kinda biased in that lumpenprole aren't exactly proles but a marginalized and totally disenfranchised chaotic wildcard class without much relation to the productive forces, that may ally randomly with proletarian and bourgeois forces, so I have my doubts...

I don't trust a mixed bag for something relating to the commanding heights of the economy

Personally, I'd rather go the Lenin route and fully restructure the financial sector to be more suited for conventional working class ranks; from peasants and proletariat...

Capitalist culture has created large-scale production, factories, railways, the postal service, telephones, etc., and on this basis {that socialism seizes, if not creates} the great majority of the functions of the old "state power" have become so simplified and can be reduced to such exceedingly simple operations of registration, filing, and checking that they can be easily performed by every literate person, can quite easily be performed for ordinary "workmen's wages", and that these functions can (and must) be stripped of every shadow of privilege, of every semblance of "official grandeur".