So, would you agree with the following statement: The value of the real Mona Lisa is dominated by its physicality; the ability for its owner to touch and feel it.
A few further thoughts to ponder over:
1) No one touches and feels the Mona Lisa. Now, that's something wholly unique to High Art, but it is worth bearing: the Mona Lisa sits in a vault, or behind panes of glass, only touched by caretakers, who don't even own it. Yet, it has value.
2) Actually, I pulled the Mona Lisa as an example, but consider: is the Mona Lisa actually valuable? By what measure? USD in a Private Sale? Is there a market (really want to stress that word, because its critical: Market) for the Mona Lisa? Is there demand for the Mona Lisa, or is the risk of owning a stolen original of the most well-recognized art in history too great? Consider how this flips the conversation: I just presented a compelling argument for why the Mona Lisa, this Thing we've been using as a stand-in to represent a "highly valuable original good", may actually be worthless! Supply, Demand, and Market Liquidity vastly dominate the Pricing of most goods/services; not Value. Art Caretakers oftentimes describe pieces of art as "priceless"; its easy to interpret that as "REALLY EXPENSIVE", but they actually mean it at face value: No one knows what the price would be, because it has no price, because it has no market.
3) Are nonphysical goods destined to be valueless? For digital goods: Isn't this already sustainably demonstrated to be false, independent of any conversation on crypto? Fortnite turns billions a year in revenue, selling digital costumes and experiences to wear them in. Those costumes hold value to people; not marketable value, but value none-the-less.
4) Does Slack have value? Woah. Think about that for a second. What is the value of Slack? Forget the stock market; think intrinsic. Its a Digital Service. So, per the argument; its nonphysical, cannot be touched and felt, and isn't even a discrete good! This should be the apex of Worthlessness in many peoples' naive model of value, which is endlessly applied in-kind to NFTs; yet Slack demonstrably and undeniably has Value. Where does it come from? What components comprise the value of Slack Inc?