mate you obviously do not work in finance. they are only looking at perceived value compared to actual value compared to potential value. this is driven by balance sheets. the scenario you list above would only be if Carlos Slim (richest man in the world) wanted an english football club and didn't give a shit about investment/asset management in which case we don't want them as an owner because we need someone who treats us as a business and its ran well. the players are most certainly assets because they along with the manager are how we stay up and get higher position, granted those assets are replaced/sold frequently but it doesn't change their value to the balance sheet.
not having a stadium is actually a positive selling point because the new owner can build it and pimp it however they want (sell naming rights, sell stand name rights, have a million billboards, etc.) to make themselves more money without upsetting the current trend (no naming rights anywhere). plus that is a great way to instantly create more value for the club in valuation perspective for when they sell.
transfermarkt feel free to negate but the echo report is from "That’s the conclusion of a new report on football finance from Dr Tom Markham, a lecturer and expert in financial profiling in football who has advised buyers and sellers of football clubs on valuation."
he knows what he's talking about and puts us at 216m.