There are no Ice Lake 45w chips - unless you want to go backwards to a 28w quad-core with relatively low clock speeds (a lot of the 28w is GPU), you're stuck with 14nm++++ in the MBP 15" or 16" (as is every user of high-end 15"+ notebooks from any vendor). Not only that, but the next generation at 45w (mid-2020) is Comet Lake (14nm+++++), and it's even possible that the mid-2021 generation will be Rocket Lake (14nm++++++). Desktop chips aren't expected to see 10nm until late 2021 or early 2022, since they have to go through both Comet Lake and Rocket Lake first, and Comet Lake is clearly on the roadmap for the 45w notebook chips with Rocket Lake possible.
As for the price (it's not going to start anywhere near $8k by the way - under $3500 for a nicely configured model (something like i9/16/1TB/Vega 20) - extra $200 for 32 GB RAM), all the 15" slim workstation notebooks can get very expensive with lots of RAM and storage.
Many of the others do start under $2000, because they're available with quad-core i5s, or with 1920x1080 screens, or with 8 GB of RAM. Getting the latest HP zBook Studio up to the specs the upper-end MBP can reach is around $6000 with 4 TB of storage and 32 GB of RAM (same i9-9980HK as the Mac, NVidia Quadro P2000 that is substantially slower than the Vega 20). It can have 64 GB of RAM, and that's $6600. The Lenovo P1 is about $500-$1000 more expensive in the same configuration (also goes to 64 GB of RAM). Both HP and Lenovo offer dual SSD slots, but the only way to 4 TB is 2x2TB, so both slots are full.
The best deal is the Dell Precision 5540, which reaches about $4300, but with only 2 TB of fast SSD - the only further expansion option is SATA, and Dell only offers spinning drives for that slot, although a user could put in a SATA SSD themselves. It's almost exactly the same price as the 15" MacBook Pro, but without the expensive option to go to 4 TB.
No matter what configuration you choose, if they can reach a comparable configuration, the Mac will be cheaper than a Lenovo P1, a little cheaper than a ZBook Studio, and within $100-$200 of a Dell 5540. You can get the others cheaper, but only by omitting things that are standard on the Mac.
Don't compare the MacBook Pro to 6-8 lb gaming machines with cheap displays - they can have the same CPU and comparable or better GPUs for less money - but they aren't anywhere near as usable outside of games. The Razer Blade is a different story, but that's well into the MBP 15" price range, and has lousy storage options - 512GB is the top option - you can have a GeForce RTX 2080 and a 4K OLED (!!!) screen, but you get a 512GB SSD with that... Their new Studio models will probably fix that, but expect to pay...
Where Apple can be criticized on price isn't that their high-end configurations are too expensive - they're close to parity with Dell (with one extra odd option), slightly cheaper than HP and substantially cheaper than Lenovo. They offer different tradeoffs than Razer, but comparable pricing. It's that they offer no entry to a notebook with a screen larger than 13" under $2299. Anyone else will sell you an upper-midrange 15" notebook with either a 6-core CPU but integrated graphics or a quad-core with a low-end discrete GPU (and a decent screen) in the $1500-$2000 range.
I suspect Apple's response to this problem (if they're not simply blind to it) will be to release a 15" MacBook Air (or maybe they'll call it a 15" MacBook). Even thinner and lighter than the Pro (3-3.5 lbs), 28W Ice Lake quad-core with decent integrated GPU, starts at $1999 (maybe they'll give up some integrated GPU performance and use a 15-25 W Ice Lake CPU in a $1699-$1799 model). Base configuration is something like 16/256 if it's $1999, maybe 8/256 at $1699.
When that comes out, the 15" Pro goes away, and the base 16" Pro is something like $2499 or $2599. The 16" Pro this fall is not going to be that base model - it's going to be a generously configured ~$3299 and up model, with the 15" Pro remaining as the option below that until next Spring/Summer. The 16" will probably top out around $6000 (9980HK/64GB/4TB/Vega 20 (or better)) - unless they offer an 8TB storage option, which could create the mythical $8K notebook - but it would be something like a $5200 notebook maxed out in every way except storage (9980HK/64GB/2TB/Vega 20) with a $2800 SSD!