I know someone who has a company with the word “technology” in the name, like “Smith Technology”. They use .technology because it’s literally the name of the company, which I think is good for the brand identity, but have run into issues where people just don’t think it’s a correct url because “smith.technology” looks like it’s missing its TLD.
This sounds more like the infrastructure in your area just isn’t up to delivering those speeds, regardless what what the last mile to the home is.
I promise you Steam’s CDN absolutely can deliver more than 450Mbps. It regularly maxes out my 1.5 Gbps at home, and I have no doubt that it could potentially go even faster than that if I had a better connection.
Like plugging a 10Gbps network switch into a 100Mbps gateway, it sounds like a fast final link to the home is being choked out by poor infrastructure in the region and can’t be fully utilized.