Or Raspbian, or Windows with a VM, or a Docker container, or MacOS (which I personally use)
Lutron RA2 is the only thing even close in cost, but it's not close in cost really. Insteon was a bargain for what it's capable of.
You very likely will be. When I sold my house, I removed all my Insteon. A decision I'm very glad for. I sold my old home as a Smart Home, so I replaced the Insteon with even more Lutron Caséta switches. They are rock solid, but between the time the house sold and our actual move, the whole family really came to dislike that fact that they always turn on to full when you press the ON button, and you cannot program that into their dimmers, unlike Insteon or the much more expensive Lutron RA2. Honestly, had I not already outfitted my new house with Insteon, I might have been tempted to put in Caséta, even at a higher cost than my existing Insteon equipment if they just had that one feature enhancement.
Z-Wave switches, no thanks. My Insteon NEVER drop off the network, and I've never had one of their devices fail. I know it's not impossible for one to fail, but they are simply better built than most of the consumer level switches out there in my experience.
That's just not going to happen. There's no sound business model for buying the guts of a defunct company to add proprietary radios for a market segment that has for many years now been significantly smaller than either Z-Wave or Zigbee. The gap just kept getting larger and larger until they eventually imploded on themselves. It a shame, but it's the reality.
Meanwhile, there are a lot of enthusiastic developers out there that are working on, or have already built workarounds using Home Assistant or other software that runs in Node or Python. Don't panic. That is mostly what's going on right now. If you can write a file to a micro SD card, and put it into a Raspberry Pi, you can setup Home Assistant. That can give you a means to control Insteon devices. It's not better than the Hubitat node.js solution, but it's easier to setup. The Home Assistant solution works with the PLMs and the hubs. There's also a panel you can add to Home Assistant that allows you to edit the device parameters like Ramp rate and default brightness. See this post for more details.