The reason I'd rather not say it is exactly because I don't want to sound like I'm just coming in here and shitting on things. I think there are no open source

The reason I'd rather not say it is exactly because I don't want to sound like I'm just coming in here and shitting on things. I think there are no open source search engines because the instant you realize you have to periodically scrape the trillions of web pages in your index for updates you just give up because there is no way you can afford that without a solid business plan, which is hard to have when you are a search engine with no users, because you have no results, because you can't scrape trillions of webpages to build an index. Hence, I don't think it makes sense to try to make a general-purpose search engine, specially as Google has mastered that art and Google results look like that.