I've never been on the SaaS sales side, but from the big-enterprise buyer side, I've seen what seems like so many unnecessary wasted cycles spent on things that could be avoided if there was a way for us to immediately start playing around with their product ourselves (and potentially even using it in production) before talking to anyone. Then when we do talk to them and schedule meetings with them, it could be focused on specific questions and feature requests we have after spending time with the product. Instead, it was usually 3 - 7 meetings before we could even get to the stage where we evaluate the product hands-on. Those meetings could be drawn out over the course of 3 - 10 months.
I got the impression a lot of that was because they wanted to sweettalk and hand-hold us as much as possible to increase the chance we would agree to the most extensive and expensive contract they could think we'd accept. All the worst offenders would want to constantly take us out to lunch and schedule various sorts of useless meetings before asking us to agree to some absurdly overpriced contract. And then our managers would have to do various dances with them over the course of weeks or months to get them to drop the price/agreement to something we found more reasonable (they'd usually concede to most or all of our requests, sometimes dropping the price by like 80% in the process).
I do understand that purely from a financial side; they have a lot more revenue (and commissions) potential if they tailor the price to the most each company is willing to pay, and giving customers access to the things which cost the least to provide, both of which may vary wildly from company to company. And maybe at the end of the day, that is actually the most effective strategy for making money. To your point, maybe a powerful sales org is actually rational to avoid automation, so they can milk more per large customer and make more net revenue. But it felt like a lot of wasted time for us engineers who weren't sure when or if we were going to evaluate the product, or purchase it after evaluation, and usually generated bad will from our engineers and especially our managers. Not to mention the annoyance of interrupting work to sit in on so many mostly-useless meetings.
Over the course of many years and dealing with probably 20 or 30 vendors, I don't think there was a single sales team we interacted with who we didn't unanimously agree we utterly despised. The exception was a small boutique firm which happened to have the best product and service in a particular domain, in addition to being priced literally 50x lower than their main competition (one of the companies that frequently wanted to meet us for lunch and schedule all sorts of pre-pre-pre-calls; that company's product was also, maybe unsurprisingly, total shit compared to the small firm's). I believe we mostly just dealt with the founder in that case.