"tech" as it's called benefits from a non-linear scale factor: serving one more person does not directly correlate to a static increase in cost, it's more derivative in nature (cost increases onefold with each order of magnitude). Add to that globalisation for free. That's how you can expect more growth and revenue from a "tech" company than from traditional industries. Service has an almost 1:1 relationship, manufacturing is kind of in the middle, where you benefit from scale but still need to purchase matter, and time from people to build stuff.
In that way tesla is not a tech company. To build an additional tesla you need more people and more robots. You need to purchase steel, lithium, leather, etc. You need to ship that Tesla. Growth doesn't come to them at a derivative cost.
As an investor you might judge that they might have better software, or better cars, and ride a wave of electrification that other manufacturers don't, which justified a higher price because their potential for growth is higher. That's not entirely true anymore, everyone else is producing electric cars now, at prices that are often cheaper, so their advantage is not that big anymore.