Only problem is, they (as in Japanese indie developer Nigoro) don't have the money for it. Not all of it. Not yet. You can already guess where this is going.
Indiana Jones is not the only one solving annoying ancient puzzles in haunted caves, armed with a whip and dynamites, far from civilization. A setting like this is perfect for video games, so it is no surprise that many were influenced by the character, and the similarities in some cases are amazing.
If you're looking for a challenge, you can now pick up the remake of oldie-but-goodie La Mulana from GoG.
Games are getting easier and getting easier. Developers are putting in various modes and reducing the difficulty curve. Well, not everybody.