I agree with your overall point that the current regulatory process related to anti-trust M&A very much needs to be improved. While the delay may be the proximate cause, focusing on that risks failing to address the fundamental root cause of the problem, which is A) lack of clarity in regulatory policies and the underlying laws authorizing them, and B) their inconsistent application across different industry contexts and between different international jurisdictions.
The lack of clarity can be improved by regulators adopting clearer public guidelines about how they will interpret and apply the rules (and then establish credibility by actually sticking with those guidelines over time). Improving consistency across jurisdictions is more challenging but still possible if regulators in the largest domains (US and EU) collaborate to harmonize their policies (as is done in many other regulatory contexts).
Recently, Lina Khan in the US has made this problem far worse by aggressively pursuing quite extreme interpretations of anti-trust law, and worse, doing so without establishing any corresponding framework or justification. As a result, this bungling has caused her agency to lose several high-profile cases. So far, much of this bungling seems to be "just for show" (ie political posturing) since it's not working.
Unfortunately, it also has the effect of nerfing the market for entrepreneurial exits via acquisition. While it's true that acquisitions large enough to attract anti-trust scrutiny are outliers, much of the money invested in earlier stage startups (which drives most new job creation in the US), is justified by average returns substantially propped up by a few such >100x acquisitions. Half the extreme high-end outliers being lopped off by regulatory uncertainty around large acquisitions is one reason capital for new business creation and growth is getting scarcer and more expensive. The point being, this matters to our industry and jobs.
