" Net Neutrality was signed a few years ago."
That's not true. It is one of many lies that Ajit Pai is inexplicably parroting in order to justify his actions to an outraged public that has unified across party lines.
Here's a history lesson:
Net neutrality and broadband internet have been tied together since the market started ditching dial-up in favor of dedicated internet connections
The FCC first outlined their four principals of "open internet" in 2005. Although this was not real regulation, the 2005 FCC was not contested when they fined a municipal ISP for blocking VOIP services.
ISPs more-or-less followed these principals at first. Whenever an isp would act too far out of line the FCC would threaten real regulations, and people generally believed the FCC had the power to enact those regulations, if they choose. But over time things had degraded to the point that the FCC established the Open Internet Order in 2010.
The open internet order is short and easy to read, by the way. It's a few easy to understand sentences that essentially says "no blocking, no unreasonable discriminating, and transparency". I recommend you read it before going off on "heavy handed" regulation.
Verizon sued almost immediately, but the Order remained in place until it was overturned in 2014.
Throttling between 2010-2014 dropped to the level of "what they thought they could get away with and not jeopardize the outcome of the court case", but it still happened. In 2011 Verizon famously blocked Google wallet in an attempt to push it's own mobile payment service (ISIS). So when people with about ISPs blocking services like Google, it's because they've done it in the past. Verizon was so bold they even did it when it was still illegal, simply because they knew that they would get the OIO overturned eventually.
I don't know if you remember what happened to internet service in 2014, but things got very bad very quickly. The most publicized example was that Netflix was forced to restructure their entire pricing scheme and prices increased by 25%. Comcast also added previously-unheard-of data caps to their landline internet service in "selected markets". All that happened to me, personally, was that my monthly internet bill doubled, but reports of services becoming unusable were everywhere. The FTC was handing out fines left and right for anti-competitive behavior and breaches of contract,. Unfortunately these fines were on the scale of tens of thousands of dollars, while the anti-competitive practices are generating in the tens of millions. The fines were a toothless joke that were just seen as the cost of doing business.
However, ISPs were still showing restraint. The FCC was threatening to reclassify the internet under Title II of the communications act of 1934, which would let them reclaim their power to protect the internet.
ISPs absolutely did not want this to happen, but they couldn't help themselves when there was so much money to grab.
So in 2015, the FCC was forced to reclassify the internet as a title II service, which essentially marked the internet as a utility like phone service. This in itself was not net neutrality, but it gave the FCC the power it needed to stop the bleeding. The regulations put into place after that point did end up being more restrictive than the original Open Internet Order, but reclassification wasn't anybody's first choice, not even the FCC. Only a portion of the regulations that are applied to phone service were carried over to the internet.
Today's repeal means that the FCC can no longer has the power to create or enforce any order to preserve an open internet. Meaning the FCC, nor any executive agency, has the power to effectively threaten or even bargain with ISPs into fair competition. This has never happened before. The situation is not the same as "before net neutrality", because that was also "back before wifi" and "back before most people had cell phones". Everything was on dial-up before the net bubble. Dial up connections were heavily regulated, as they counted as phone service.