My thoughts as well. It sounds like there will be heavy reliance on the "cloud" with this sim. I am very excited about much of what will be delivered, however am cautiously optimistic about bandwidth needs. I don't typically have issues in that department, however, have read that some of the graphic anomalies - mis-shaped terrain/buildings etc. that occur on occasion are a result of poor bandwidth somewhere along the line. Turning off photogrammetry seemed to make these issues go away for me. The other thing that happens to me is the horribly long download/install process. It typically takes about 4 days of constant downloading to install MSFS2020. I've tried the many suggestions (VPN, throttling bandwidth, and a multitude of other suggestions) with no avail. I don't have bandwidth issues on my end and play other bandwidth heavy games that play without degradation or latency. - only reason I mention this is there is a bottleneck somewhere that is related to throughput. There are quite a few folks that still suffer from this (but not all). For some it has gotten better, I for whatever unfortunate reason am not one of them. I mention this because it is another example of current bandwidth restrictions that seem to only impact MSFS on my machine.
My hope is that Microsoft will allow enough bandwidth to handle what sounds like quite a bit of cloud based content to be delivered. I'm sure at the end of the day, it will be cost -vs- quality.