Marketing is so much more than a budget. In a pre-social media world, it may have been easier to convince a consumer to buy through splashy campaigns and endorsements. Today, consumers control the conversation and if you aren’t making a product that they want, you won’t be able to convince them otherwise.
Even if you do, they now have a worldwide reach and they can tell the whole world what they think of your product. It’s much more rewarding (though definitely not easier) spending time, effort, (and yes) money researching and developing products that resonate with consumers. When you have a product that you are proud of and that fits the market – then take it to the world.