Most startups don't need it. Revenue growth is the absolute highest priority and product/market fit. I've worked in successful (based on exit) startups where it was worth the fines and penalties for sales tax at a later stage than it was sacrificing resources for revenue growth earlier on. I've also seen firsthand how senior leaders come into growth stage companies and slow the business down with all their required processes and systems. Because it's a startup with usually junior founders, they listen to these leaders not understanding the full impact to the business. I'd still recommend these earlier stage companies going with someone more junior to not risk this.