Buying a share of Tesla gives you equity in the efforts of thousands of smart people, accumulated intellectual property, factories, sales and marketing organizations etc. The shareholder probably expects the generated cash flow to be channeled by Tesla into creating something new, thus expanding the scope of what a share of TSLA represents. Those expectations may be unrealistic, but there is actual growth and invention underlying the speculation.
Bitcoin doesn’t represent any such creative endeavor. It’s the very opposite: an artificial scarcity mindgame that burns fossil fuels to power useless random number generators. It’s a tragedy that intelligent people who could be doing something creative instead spend their energy on greedy speculation around such a dark project.