If the situation is exactly the same up to the point of your two options, then there is a "Self digging shovel" available at some level in both situations. In situation #2, it isn't for sale, and unless you can conclusively promise shovel in one year, for only $5,000 then option 1 is still the only valid consideration. Further, if option 2 says there are no patents (assuming that is the change) then I can build a shelf digging shovel today for whatever price, and as long as the value I get out of it is better than before, I'll get my $20,000 shovel either way.
1) 20000 for shovel get 30000 use from shovel in year one. Year two is how much (no answer in option 1) is it free, or nearly free? Does it cost 20K / year forever (unlikely) or what. Incomplete information leads to bad decisions.
2) Can't buy Self Digging shovel (unknown reason). Promise that they will be available in a year for $5000 (if you believe vaporware promises)
all the unknown variables make your assumptions useless, which is why I chose (and still choose) option 1. Based on the INFORMATION I have, it is the only real choice.