> When two companies have wildly different capital structures, you have to compare them on enterprise value, not the market cap of their equity. So while I give kudos to Tesla for building a valuable business, it still has a long way to go to catch up to Ford.
That is not necessarily true.
Market cap and enterprise value are two equally valid ways of measuring value or worth. There are even more ways to measure value, such as DCF or value of assets. All of these have their pros and cons.
In this case, my personal opinion is that market cap is a very meaningful way to measure Tesla/Ford and that it's noteworthy that Tesla has passed Ford.
I think it is very meaningful because it (loosely) implies that the present value of Tesla's profits (i.e. net profit after tax) is higher than Ford's. Even on a risk-weighted basis. Or, at least, that's roughly-kinda-sorta what the market believes.
I would argue that enterprise value would be more meaningful that market cap if we were talking about which company was 'bigger'. However, the interesting thing here is that Tesla has become more 'valuable' than Ford, for this definition of value.