For example, get expensive accounting software or need an enigma machine to figure out their LLC structure. 

Tech or not, history has proven that its a growing machine. 

So with that logic, a dishwasher, gas stove, washing machine and even a lot of fridges today with water lines would remain "attached".

Added washer and dryer hook-ups and installed the machines.

I havent heard of one in WI that requires more frequent pumping. yes no disposal, and advisable to have a filter on the washing machine discharge as well, and good idea to have them drop enzyme tabs monthly as well, but in all honesty, a good working system will work  20-40 years (average life expectancy) or longer with out any issues. around here a 3 bedroom system replacement (tank and drain field) runs around $5-$6K but a mound with clay soil can easily exceed $20K so lots of variables. 

You’re building a self-funding machine.

Of course you want to do your main gig with the highest integrity, but where appropriate you might look at some software called Deal Machine and as you seen potential deal homes, plug them in and work them.

Maybe he spends 20 years working for a corporation then should he build a machine shop in your garage and start a tool company and compete with Milwaukee Tools?

He took his time machine back to 2013.  

If I had a time machine I would have bought a vacation place there when prices weren't outrageous.