There's Alienware's m15 notebook, which is lighter and can also come with the RTX 2060. If you work mostly at home / at a certain place, perhaps a desktop computer will be more cost-efficient. Maybe paired with one of the new Ryzens (12 or 16 core) that even beat the i9 9900K in many benchmarks ;-).

I work (full time-ish) freelance for 3 to 12 months at a time. I upload my work in git, and save my data in Dropbox. After each project I make sure everything I need is in the cloud, and clear the hard-drive and do a clean re-install of the OS (Linux; last 3 installations were regular Ubuntu, Manjaro, and currently on Xubuntu). I switch between hardwares a lot (sometimes I even use an Intel NUC with an i5 + good SSD + enough RAM, which can be really fast on a light-weight Linux). So I'm less dependent on the hardware and I get faster at setting up what I need. Last time I needed about 1,5 hours to re-install a new Linux distro, setup my ssh keys and get the programs I need to be 98% productive again.

I feel none of the OSes (e.g. Mac OS, Windows, Linux... Linuces?) always "just work". After some time of usage, they seem to always break down somewhere. I try to reduce the risk of failure by having exchangeable hardware + software, a re-installation routine and online-synced data.

Add a nice mechanical keyboard and a decent mouse that fits your hand - and you gain control of your computer and have more freedom in your choices.

ha yeah its like a desktop, but if you need a GPU, its gonna be heavy