They spent a ton of money buying other companies. That’s always capital intense.
Software isn’t capital intensive the way a large industrial factory would be, but it still has unfavorable financial conditions that require raising. You can’t sell software until you’ve built it, so you have to incur a large employee/R&D expense for years until the product is ready. And of course none of that is IP that you can just get a loan against (unlike say, building a factory).