There's a lot to unpack there, AR.

Agreed with much of your macro points, that we've got structural flaws --- especially since financial wizards created "synthetic tools", monetized debt and even the 'insurance' products for those...products. Agree that shadow banking, dark pools of money, and what you call "ghost wealth" is a problem for economies that want employment, and people with paychecks to keep the train running.
We've had debates about the terminology before, but I've not had much success in explaining the differences (in my view) between "good" or "bad" speculation or derivatives. Let alone explaining that commodities trading has changed since exchanges merged, that farmers/producers (and CEOs as you said) are competing with HFT and day-traders, and have changed what
speculation means. That new synthetic derivatives have changed what
derived from means, when there are so many counterparties buying/selling
debt as profit and don't know the value of the underlying thing, or if it's even real. (ie mortgages)
I suppose, technically, any investment could be considered a speculation of sorts. Even if it's buying/holding for value over decades in hopes a company grows and profits. Even buying treasurys or parking cash in a bank could be called 'speculative', regarding the value of a currency, a country's policies, solvency of the bank or gov't guarantees on deposits. Unfortunately, the gambling and naked betting has gotten mixed in the soup. Saving isn't enough to keep up with inflation, and all sorts of "regular folks" are forced into volatile and
speculative markets.
Retiring seniors are told to divest of stocks and buy municipal bonds or annuities (also facing future insolvency or risk), with fees that can eat any miniscule profit or tax deduction. Working age employees are told to put their salaries into 401Ks or mutual funds, with matching contributions, and watch the value plummet during a financial meltdown. Anyone with a pulse is told to buy a home with mortgage debt, then get an equity line of credit to start a small business, and finds themselves underwater with a home they can't sell, and debt they can't pay. Enough dominoes fall and their small business fails, too, when consumers stop consuming. Students are told to 'invest' in college education, using loans to get those degrees (often in industries that are shrinking or not hiring), and find they've got a ton of debt
they can never discharge with a minimum wage job.
It's a sad scenario when we find nations debating what
kind of capitalism to 'incentivize', because money (capital) has become dissociated from productive labor and work, financiers profit from trading other peoples' money and never "lose", a majority of citizens have too much debt but not enough retirement savings, and Saving isn't enough to take earned money into the future...without losing money.
/rant