AAPL net earnings for 2020 was 30%. AMZN had almost no Net Profit their entire existence, because they were reinvesting in growth. Once their growth slows, you

AAPL net earnings for 2020 was 30%. AMZN had almost no Net Profit their entire existence, because they were reinvesting in growth. Once their growth slows, you can expect them to show higher Net Margins. The key for high growth companies is Gross Margins. The higher the gross, the more they can reinvest. And, the higher their net margins will be once the growth slows. Tesla is vertically integrated. That means they don't need to share profit with a supply chain to the same extent as the incumbents. Hence, I split the difference between the incumbents and Apple's net profit. Feel free to adjust the numbers to what you speculate the future holds. You'll get a different time horizon that will likely be even more ridiculous.