The way most publications would write that value would be $1,000,000, or just $1MM if you're nasty. Either are acceptable because they are clear and follow widely-used conventions.
As to the substance, I think the pricing changes hurts small developers who strike gold, which is bad, but I don't really care how it affects Facebook, or TikTok, or Amazon, or whomever else would hit 1MM downloads. That's a personal choice. I agree with the author that only allowing third-party browser engines in certain locales would create an undue burden on companies like Mozilla, or really anyone who wants to compete without WebKit, and seems mean-spirited in that it follows the letter of the regulation without following the spirit.