It’s a great question. It’s a rational line of thought. However, the market can stay irrational longer than you can stay solvent (if you were planning to go the opposite way).
Honestly, in a company that isn't returning capital to shareholders, I don't see the point if it's a company that isn't somehow subject to a potential acquisition. If you don't have a path to monetize your stake, why buy it? These days, just vibes. TSLA and SPCX might as well just be another crypto like Bitcoin