Everybody around you is affecting your ping.
Throughput is one thing but ping is what we seek with online gaming.
That depends on many factors. The physical network layout is a start. Are you sharing a physical link with others? Yes, if you are on a cable connection, no for everything else. Even on a cable connection it has to do with the physical capability of the connection.
In many areas cable has switched to fiber optics, with a significantly higher bandwidth, so sharing is a non issue.
Carrier based Ethernet switches do not bog down. Each port operates at full port speeds, 100% of the time.
The smart ISP, today, has the opportunity to install servers, on their network, which carry the various streaming services content. Many large neighborhoods can do the same thing. We did in my neighborhood. We have a Netflix server serving about 1,000 homes (growing daily). Our ISP is ecstatic.
The landscape for streaming is not the same as it was a few years ago. It has less impact today than it did a few years ago and keeps getting better. If we can manage to keep the FCC out of it, then things should improve even more.
If you are concerned it is impacting you, then take the lead and work on making it better for yourself. I did.