Internet Speed and what should we expect?

Hello, 

Am a business internet subscriber at the 1G level, (Several hundred dollars a month) I got the service at the beginning of the Covid-19 situation and in all fairness, it has been a godsend in terms of having persistent, stable and speedy internet. But the reality is that I have been speed testing this line daily for the last 45 day and this is is the measurement i get daily. (Sometimes, the download is slightly slower but not by much) 

My three questions are these: First, is that 41.83 really what is acceptable as 1G service? Second, currently this connection is dedicated to my machine, but if we grow at all, will the current speeds be able to support multiple workstations and wi-fi connections? (The collateral material that came with the account claimed that we should be able to support up to 15 machines) and Finally, my connection is in the 98105 Zip code, is there any plan to upgrade this part of the network to enable more download/upload parity? Thanks in advance.